Limit dimensions of ordinary threads GB/T 15756-2008

Internal thread limit size GB/T 15756-2008


  • Tolerance zone 4H: Limit size table 1 of internal threads with nominal diameter 1mm~100mm

    Table 1 Limit dimensions of 4H internal thread (unit: mm ) 

    Nominal diameter

    D

    pitch

    P

    Da Jia

    Dmin _

    Medium diameter

    trails

    D2max _

    D2min _

    D1max _

    D 1min

    1

    0.2

    1

    0.91

    0.87

    0.821

    0.783

    0.25

    1

    0.883

    0.838

    0.774

    0.729

    1.1

    0.2

    1.1

    1.01

    0.97

    0.921

    0.883

    0.25

    1.1

    0.983

    0.938

    0.874

    0.829

    1.2

    0.2

    1.2

    1.11

    1.07

    1.021

    0.983

    0.25

    1.2

    1.083

    1.038

    0.974

    0.929

    1.4

    0.2

    1.4

    1.31

    1.27

    1.221

    1.183

    0.3

    1.4

    1.253

    1.205

    1.128

    1.075

    1.6

    0.2

    1.6

    1.512

    1.47

    1.421

    1.383

    0.35

    1.6

    1.426

    1.373

    1.284

    1.221

    1.8

    0.2

    1.8

    1.712

    1.67

    1.621

    1.583

    0.35

    1.8

    1.626

    1.573

    1.484

    1.421

    2

    0.25

    2

    1.886

    1.838

    1.774

    1.729

    0.4

    2

    1.796

    1.74

    1.638

    1.567

    2.2

    0.25

    2.2

    2.086

    2.038

    1.974

    1.929

    0.45

    2.2

    1.968

    1.908

    1.793

    1.713

    2.5

    0.35

    2.5

    2.326

    2.273

    2.184

    2.121

    0.45

    2.5

    2.268

    2.208

    2.093

    2.013

    3

    0.35

    3

    2.829

    2.773

    2.684

    2.621

    0.5

    3

    2.738

    2.675

    2.549

    2.459

    3.5

    0.35

    3.5

    3.329

    3.273

    3.184

    3.121

    0.6

    3.5

    3.181

    3.11

    2.95

    2.85

    4

    0.5

    4

    3.738

    3.675

    3.549

    3.459

    0.7

    4

    3.62

    3.545

    3.354

    3.242

    4.5

    0.5

    4.5

    4.238

    4.175

    4.049

    3.959

    0.75

    4.5

    4.088

    4.013

    3.806

    3.688

    5

    0.5

    5

    4.738

    4.675

    4.549

    4.459

    0.8

    5

    4.56

    4.48

    4.259

    4.134

    5.5

    0.5

    5.5

    5.238

    5.175

    5.049

    4.959

    6

    0.75

    6

    5.598

    5.513

    5.306

    5.188

    1

    6

    5.445

    5.35

    5.067

    4.917

    7

    0.75

    7

    6.598

    6.513

    6.306

    6.188

    1

    7

    6.445

    6.35

    6.067

    5.917

    8

    0.75

    8

    7.598

    7.513

    7.306

    7.188

    1

    8

    7.445

    7.35

    7.067

    6.917

    1.25

    8

    7.288

    7.188

    6.817

    6.647

    9

    0.75

    9

    8.598

    8.513

    8.306

    8.188

    1

    9

    8.445

    8.35

    8.067

    7.917

    1.25

    9

    8.288

    8.188

    7.817

    7.647

    10

    0.75

    10

    9.598

    9.513

    9.306

    9.188

    1

    10

    9.445

    9.35

    9.067

    8.917

    1.25

    10

    9.288

    9.188

    8.817

    8.647

    1.5

    10

    9.138

    9.026

    8.566

    8.376

    11

    0.75

    11

    10.598

    10.513

    10.306

    10.188

    1

    11

    10.445

    10.35

    10.067

    9.917

    1.5

    11

    10.138

    10.026

    9.566

    9.376

    12

    1

    12

    11.45

    11.35

    11.067

    10.917

    1.25

    12

    11.3

    11.188

    10.817

    10.647

    1.5

    12

    11.144

    11.026

    10.566

    10.376

    1.75

    12

    10.988

    10.863

    10.318

    10.106

    14

    1

    14

    13.45

    13.35

    13.067

    12.917

    1.5

    14

    13.144

    13.026

    12.566

    12.376

    2

    14

    12.833

    12.701

    12.071

    11.835

    15

    1

    15

    14.45

    14.35

    14.067

    13.917

    1.5

    15

    14.144

    14.026

    13.566

    13.376

    16

    1

    16

    15.45

    15.35

    15.067

    14.917

    1.5

    16

    15.144

    15.026

    14.566

    14.376

    2

    16

    14.833

    14.701

    14.071

    13.835

    17

    1

    17

    16.45

    16.35

    16.067

    15.917

    1.5

    17

    16.144

    16.026

    15.566

    15.376

    18

    1

    18

    17.45

    17.35

    17.067

    16.917

    1.5

    18

    17.144

    17.026

    16.566

    16.376

    2

    18

    16.833

    16.701

    16.071

    15.835

    2.5

    18

    16.516

    16.376

    15.574

    15.294

    20

    1

    20

    19.45

    19.35

    19.067

    18.917

    1.5

    20

    19.144

    19.026

    18.566

    18.376

    2

    20

    18.833

    18.071

    18.071

    17.835

    2.5

    20

    18.516

    18.376

    17.574

    17.294

    22

    1

    22

    21.45

    21.35

    21.067

    20.917

    1.5

    22

    21.144

    21.026

    20.566

    20.376

    2

    22

    20.833

    20.701

    20.071

    19.835

    2.5

    22

    20.516

    20.376

    19.574

    19.294

    24

    1

    24

    23.456

    23.35

    23.067

    22.917

    1.5

    24

    23.151

    23.026

    22.566

    22.376

    2

    24

    22.841

    22.701

    22.071

    21.835

    3

    24

    22.221

    22.051

    21.067

    20.752

    25

    1

    25

    24.456

    24.35

    24.067

    23.917

    1.5

    25

    24.151

    24.026

    23.566

    23.376

    2

    25

    23.841

    23.701

    23.071

    22.835

    26

    1.5

    26

    25.151

    25.026

    24.566

    24.376

    27

    1

    27

    26.456

    26.35

    26.067

    25.917

    1.5

    27

    26.151

    26.026

    25.566

    25.376

    2

    27

    25.841

    25.701

    25.071

    24.835

    3

    27

    25.221

    25.051

    24.067

    23.752

    28

    1

    28

    27.456

    27.35

    27.067

    26.917

    1.5

    28

    27.151

    27.026

    26.566

    26.376

    2

    28

    26.841

    26.701

    26.071

    25.835

    30

    1

    30

    29.456

    29.35

    29.067

    28.917

    1.5

    30

    29.151

    29.026

    28.566

    28.376

    2

    30

    28.841

    028.701

    28.071

    27.835

    3

    30

    28.221

    28.051

    27.067

    26.752

    3.5

    30

    27.907

    27.727

    26.566

    26.211

    32

    1.5

    32

    31.151

    31.026

    30.566

    30.376

    2

    32

    30.841

    30.701

    30.071

    29.835

    33

    1.5

    33

    32.151

    32.026

    31.566

    31.376

    2

    33

    31.841

    31.701

    31.071

    30.835

    3

    33

    31.221

    31.051

    30.067

    29.752

    3.5

    33

    30.907

    30.727

    29.566

    29.211

    36

    1.5

    36

    35.151

    35.026

    34.566

    34.376

    2

    36

    34.841

    34.701

    34.071

    33.835

    3

    36

    34.221

    34.051

    33.067

    32.752

    4

    36

    33.592

    33.402

    32.045

    31.67

    38

    1.5

    38

    37.151

    37.026

    36.566

    36.376

    39

    1.5

    39

    38.151

    38.026

    37.566

    37.376

    2

    39

    37.841

    37.701

    37.071

    36.835

    3

    39

    37.221

    37.051

    36.067

    35.752

    4

    39

    36.592

    36.402

    35.045

    34.67

    40

    1.5

    40

    39.151

    39.026

    38.566

    38.376

    2

    40

    38.841

    38.701

    38.071

    37.835

    3

    40

    38.221

    38.051

    37.067

    36.752

    42

    1.5

    42

    41.151

    41.026

    40.566

    40.376

    2

    42

    40.841

    40.701

    40.071

    39.835

    3

    42

    40.221

    40.051

    39.067

    38.752

    4

    42

    39.592

    39.402

    38.045

    37.67

    4.5

    42

    39.277

    39.077

    37.554

    37.129

    45

    1.5

    45

    44.151

    44.026

    43.566

    43.376

    2

    45

    43.841

    43.701

    43.071

    42.835

    3

    45

    43.221

    43.051

    42.067

    41.752

    4

    45

    42.592

    42.402

    41.045

    40.67

    4.5

    45

    42.277

    42.077

    40.554

    40.129

    48

    1.5

    48

    47.158

    47.026

    46.566

    46.376

    2

    48

    46.851

    46.701

    46.071

    45.835

    3

    48

    46.231

    46.051

    45.067

    44.752

    4

    48

    45.602

    45.402

    44.045

    43.67

    5

    48

    44.964

    44.752

    43.037

    42.587

    50

    1.5

    50

    49.158

    49.026

    48.566

    48.376

    2

    50

    48.851

    48.701

    48.071

    47.835

    3

    50

    48.231

    48.051

    47.067

    46.752

    52

    1.5

    52

    51.158

    51.026

    50.566

    50.376

    2

    52

    50.851

    50.701

    50.071

    49.835

    3

    52

    50.231

    50.051

    49.067

    48.752

    4

    52

    49.602

    49.402

    48.045

    47.67

    5

    52

    48.964

    48.752

    47.037

    46.587

    55

    1.5

    55

    54.158

    54.026

    53.566

    53.376

    2

    55

    53.851

    53.701

    53.071

    52.835

    3

    55

    53.231

    53.051

    52.067

    51.752

    4

    55

    52.602

    52.402

    51.045

    50.67

    56

    1.5

    56

    55.158

    55.026

    54.566

    54.376

    2

    56

    54.851

    54.701

    54.071

    53.835

    3

    56

    54.231

    54.051

    53.067

    52.752

    4

    56

    53.602

    53.402

    52.045

    51.67

    5.5

    56

    52.652

    52.428

    50.521

    50.046

    58

    1.5

    58

    57.158

    57.026

    56.566

    56.376

    2

    58

    56.851

    56.701

    56.071

    55.835

    3

    58

    56.231

    56.051

    55.067

    54.752

    4

    58

    55.602

    55.402

    54.045

    53.67

    60

    1.5

    60

    59.158

    59.026

    58.566

    58.376

    2

    60

    58.851

    58.701

    58.071

    57.835

    3

    60

    58.231

    58.051

    57.067

    56.752

    4

    60

    57.602

    57.402

    56.045

    55.67

    5.5

    60

    56.652

    56.428

    54.521

    54.046

    62

    1.5

    62

    61.158

    61.026

    60.566

    60.376

    2

    62

    60.851

    60.701

    60.071

    59.835

    3

    62

    60.231

    60.051

    59.067

    58.752

    4

    62

    59.602

    59.402

    58.045

    57.67

    64

    1.5

    64

    63.158

    63.026

    62.566

    62.376

    2

    64

    62.851

    62.701

    62.071

    61.835

    3

    64

    62.231

    62.051

    61.067

    60.752

    4

    64

    61.602

    61.402

    60.045

    59.67

    6

    64

    60.339

    60.103

    58.005

    57.505

    65

    1.5

    65

    64.158

    64.026

    63.566

    63.376

    2

    65

    63.851

    63.701

    63.071

    62.835

    3

    65

    63.231

    63.051

    62.067

    61.752

    4

    65

    62.602

    62.402

    61.045

    60.67

    68

    1.5

    68

    67.158

    67.026

    66.566

    66.376

    2

    68

    66.851

    66.701

    66.071

    65.835

    3

    68

    66.231

    66.051

    65.067

    64.752

    4

    68

    65.602

    65.402

    64.045

    63.67

    6

    68

    64.339

    64.103

    62.005

    61.505

    70

    1.5

    70

    69.158

    69.026

    68.566

    68.376

    2

    70

    68.851

    68.701

    68.071

    67.835

    3

    70

    68.231

    68.051

    67.067

    66.752

    4

    70

    67.602

    67.402

    66.045

    65.67

    6

    70

    66.339

    66.103

    64.005

    63.505

    72

    1.5

    72

    71.158

    71.026

    70.566

    70.376

    2

    72

    70.851

    70.701

    70.071

    69.835

    3

    72

    70.231

    70.051

    69.067

    68.752

    4

    72

    69.602

    69.402

    68.045

    67.67

    6

    72

    68.339

    68.103

    66.005

    65.505

    75

    1.5

    75

    74.158

    74.026

    73.566

    73.376

    2

    75

    73.851

    73.701

    73.071

    72.835

    3

    75

    73.231

    73.051

    72.067

    71.752

    4

    75

    72.602

    72.402

    71.045

    70.67

    76

    1.5

    76

    75.158

    75.026

    74.566

    74.376

    2

    76

    74.851

    74.701

    74.071

    73.835

    3

    76

    74.231

    74.051

    73.067

    72.752

    4

    76

    73.602

    73.402

    72.045

    71.67

    6

    76

    72.339

    72.103

    70.005

    69.505

    78

    2

    78

    76.851

    76.701

    76.071

    75.835

    80

    1.5

    80

    79.158

    79.026

    78.566

    78.376

    2

    80

    78.851

    78.701

    78.071

    77.835

    3

    80

    78.231

    78.051

    77.067

    76.752

    4

    80

    77.602

    77.402

    76.045

    75.67

    6

    80

    76.339

    76.103

    74.005

    73.505

    82

    2

    82

    80.851

    80.701

    80.071

    79.835

    85

    2

    85

    83.851

    83.071

    83.071

    82.835

    3

    85

    83.231

    83.051

    82.067

    81.752

    4

    85

    82.602

    82.402

    81.045

    80.67

    6

    85

    81.339

    81.103

    79.005

    78.505

    90

    2

    90

    88.851

    88.701

    88.071

    87.835

    3

    90

    88.231

    88.051

    87.067

    86.752

    4

    90

    87.602

    87.402

    86.045

    85.67

    6

    90

    86.339

    86.103

    84.005

    83.505

    95

    2

    95

    93.861

    93.701

    93.071

    92.835

    3

    95

    93.241

    93.051

    92.067

    91.752

    4

    95

    92.614

    92.402

    91.045

    90.67

    6

    95

    91.353

    91.103

    89.005

    88.505

    100

    2

    100

    98.861

    98.701

    98.071

    97.835

    3

    100

    98.241

    98.051

    97.067

    96.752

    4

    100

    97.614

    97.402

    96.045

    95.67

    6

    100

    96.353

    96.103

    94.005

    93.505

  • Tolerance zone 5H: Limit size table 2 of internal threads with nominal diameter 1mm~300mm

    Table 2 Limit dimensions of 5H internal thread (unit: mm )

    Nominal diameter

    D

    pitch

    P

    Da Jia

    Dmin _

    Medium diameter

    trails

    D2max _

    D2min _

    D1max _

    D 1min

    1

    0.25

    1

    0.894

    0.838

    0.785

    0.729

    1.1

    0.25

    1.1

    0.994

    0.938

    0.885

    0.829

    1.2

    0.25

    1.2

    1.094

    1.038

    0.985

    0.929

    1.4

    0.3

    1.4

    1.265

    1.205

    1.142

    1.075

    1.6

    0.35

    1.6

    1.44

    1.373

    1.301

    1.221

    1.8

    0.35

    1.8

    1.64

    1.573

    1.501

    1.421

    2

    0.25

    2

    1.898

    1.838

    1.785

    1.729

    0.4

    2

    1.811

    1.74

    1.657

    1.567

    2.2

    0.25

    2.2

    2.098

    2.038

    1.985

    1.929

    0.45

    2.2

    1.983

    1.908

    1.813

    1.713

    2.5

    0.35

    2.5

    2.34

    2.273

    2.201

    2.121

    0.45

    2.5

    2.283

    2.208

    2.113

    2.013

    3

    0.35

    3

    2.844

    2.773

    2.701

    2.621

    0.5

    3

    2.755

    2.675

    2.571

    2.459

    3.5

    0.35

    3.5

    3.344

    3.273

    3.201

    3.121

    0.6

    3.5

    3.2

    3.11

    2.975

    2.85

    4

    0.5

    4

    3.755

    3.675

    3.571

    3.459

    0.7

    4

    3.64

    3.545

    3.382

    3.242

    4.5

    0.5

    4.5

    4.255

    4.175

    4.071

    3.959

    0.75

    4.5

    4.108

    4.013

    3.838

    3.688

    5

    0.5

    5

    4.755

    4.675

    4.571

    4.459

    0.8

    5

    4.58

    4.48

    4.294

    4.134

    5.5

    0.5

    5.5

    5.255

    5.175

    5.071

    4.959

    6

    0.75

    6

    5.619

    5.513

    5.338

    5.188

    1

    6

    5.468

    5.35

    5.107

    4.917

    7

    0.75

    7

    6.619

    6.513

    6.338

    6.188

    1

    7

    6.468

    6.35

    6.107

    5.917

    8

    0.75

    8

    7.619

    7.513

    7.338

    7.188

    1

    8

    7.468

    7.35

    7.107

    6.917

    1.25

    8

    7.313

    7.188

    6.859

    6.647

    9

    0.75

    9

    8.619

    8.513

    8.338

    8.188

    1

    9

    8.468

    8.35

    8.107

    7.917

    1.25

    9

    8.313

    8.188

    7.859

    7.647

    10

    0.75

    10

    9.619

    9.513

    9.338

    9.188

    1

    10

    9.468

    9.35

    9.107

    8.917

    1.25

    10

    9.313

    9.188

    8.859

    8.647

    1.5

    10

    9.166

    9.026

    8.612

    8.376

    11

    0.75

    11

    10.619

    10.513

    10.338

    10.188

    1

    11

    10.468

    10.35

    10.107

    9.917

    1.5

    11

    10.166

    10.026

    9.612

    9.376

    12

    1

    12

    11.475

    11.35

    11.107

    10.917

    1.25

    12

    11.328

    11.188

    10.859

    10.647

    1.5

    12

    11.176

    11.026

    10.612

    10.376

    1.75

    12

    11.023

    10.863

    10.371

    10.106

    14

    1

    14

    13.475

    13.35

    13.107

    12.917

    1.5

    14

    13.176

    13.026

    12.612

    12.376

    2

    14

    12.871

    12.701

    12.135

    11.835

    15

    1

    15

    14.475

    14.35

    14.107

    13.917

    1.5

    15

    14.176

    14.026

    13.612

    13.376

    16

    1

    16

    15.475

    15.35

    15.107

    14.917

    1.5

    16

    15.176

    15.026

    14.612

    14.376

    2

    16

    14.871

    14.701

    14.135

    13.835

    17

    1

    17

    16.475

    16.35

    16.107

    15.917

    1.5

    17

    16.176

    16.026

    15.612

    15.376

    18

    1

    18

    17.475

    17.35

    17.107

    16.917

    1.5

    18

    17.176

    17.026

    16.612

    16.376

    2

    18

    16.871

    16.701

    16.135

    15.835

    2.5

    18

    16.556

    16.376

    15.649

    15.294

    20

    1

    20

    19.475

    19.35

    19.107

    18.917

    1.5

    20

    19.176

    19.026

    18.612

    18.376

    2

    20

    18.871

    18.701

    18.135

    17.835

    2.5

    20

    18.556

    18.376

    17.649

    17.294

    22

    1

    22

    21.475

    21.35

    21.107

    20.917

    1.5

    22

    21.176

    21.026

    20.612

    20.376

    2

    22

    20.871

    20.701

    20.135

    19.835

    2.5

    22

    20.556

    20.376

    19.649

    19.294

    24

    1

    24

    23.482

    23.35

    23.107

    22.917

    1.5

    24

    23.186

    23.026

    22.612

    22.376

    2

    24

    22.881

    22.701

    22.135

    21.835

    3

    24

    22.263

    22.051

    21.152

    20.752

    25

    1

    25

    24.482

    24.35

    24.107

    23.917

    1.5

    25

    24.186

    24.026

    23.612

    23.376

    2

    25

    23.881

    23.701

    23.135

    22.835

    26

    1.5

    26

    25.186

    25.026

    24.612

    24.376

    27

    1

    27

    26.482

    26.35

    26.107

    25.917

    1.5

    27

    26.186

    26.026

    25.612

    25.376

    2

    27

    25.881

    25.701

    25.135

    24.835

    3

    27

    25.263

    25.051

    24.152

    23.752

    28

    1

    28

    27.482

    27.35

    27.107

    26.917

    1.5

    28

    27.186

    27.026

    26.612

    26.376

    2

    28

    26.881

    26.701

    26.135

    25.835

    30

    1

    30

    29.482

    29.35

    29.107

    28.917

    1.5

    30

    29.186

    29.026

    28.612

    28.376

    2

    30

    28.881

    28.701

    28.135

    27.835

    3

    30

    28.263

    28.051

    27.152

    26.752

    3.5

    30

    27.951

    27.727

    26.661

    26.211

    32

    1.5

    32

    31.186

    31.026

    30.612

    30.376

    2

    32

    30.881

    30.701

    30.135

    29.835

    33

    1.5

    33

    32.186

    32.026

    31.612

    31.376

    2

    33

    31.881

    31.701

    31.135

    30.835

    3

    33

    31.263

    31.051

    30.152

    29.752

    3.5

    33

    30.951

    30.727

    29.661

    29.211

    36

    1.5

    36

    35.186

    35.026

    34.612

    34.376

    2

    36

    34.881

    34.701

    34.135

    33.835

    3

    36

    34.263

    34.051

    33.152

    32.752

    4

    36

    33.638

    33.402

    32.145

    31.67

    38

    1.5

    38

    37.186

    37.026

    36.612

    36.376

    39

    1.5

    39

    38.186

    38.026

    37.612

    37.376

    2

    39

    37.881

    37.701

    37.135

    36.835

    3

    39

    37.263

    37.051

    36.152

    35.752

    4

    39

    36.638

    36.402

    35.145

    34.67

    40

    1.5

    40

    39.186

    39.026

    38.612

    38.376

    2

    40

    38.881

    38.701

    38.135

    37.835

    3

    40

    38.263

    38.051

    37.152

    36.752

    42

    1.5

    42

    41.186

    41.026

    40.612

    40.376

    2

    42

    40.881

    40.701

    40.135

    39.835

    3

    42

    40.263

    40.051

    39.152

    38.752

    4

    42

    39.638

    39.402

    38.145

    37.67

    4.5

    42

    39.327

    39.077

    37.659

    37.129

    45

    1.5

    45

    44.186

    44.026

    43.612

    43.376

    2

    45

    43.881

    43.701

    43.135

    42.835

    3

    45

    43.263

    43.051

    42.152

    41.752

    4

    45

    42.638

    42.402

    41.145

    40.67

    4.5

    45

    42.327

    42.077

    40.659

    40.129

    48

    1.5

    48

    47.196

    47.026

    46.612

    46.376

    2

    48

    46.891

    46.701

    46.135

    45.835

    3

    48

    46.275

    46.051

    45.152

    44.752

    4

    48

    45.652

    45.402

    44.145

    43.67

    5

    48

    45.017

    44.752

    43.147

    42.587

    50

    1.5

    50

    49.196

    49.026

    48.612

    48.376

    2

    50

    48.891

    48.701

    48.135

    47.835

    3

    50

    48.275

    48.051

    47.152

    46.752

    52

    1.5

    52

    51.196

    51.026

    50.612

    50.376

    2

    52

    50.891

    50.701

    50.135

    49.835

    3

    52

    50.275

    50.051

    49.152

    48.752

    4

    52

    49.652

    49.402

    48.145

    47.67

    5

    52

    49.017

    48.752

    47.147

    46.587

    55

    1.5

    55

    54.196

    54.026

    53.612

    53.376

    2

    55

    53.891

    53.701

    53.135

    52.835

    3

    55

    53.275

    53.051

    52.152

    51.752

    4

    55

    52.652

    52.402

    51.145

    50.67

    56

    1.5

    56

    55.196

    55.026

    54.612

    54.376

    2

    56

    54.891

    54.701

    54.135

    53.835

    3

    56

    54.275

    54.051

    53.152

    52.752

    4

    56

    53.652

    53.402

    52.145

    51.67

    5.5

    56

    52.708

    52.428

    50.646

    50.046

    58

    1.5

    58

    57.196

    57.026

    56.612

    56.376

    2

    58

    56.891

    56.701

    56.135

    55.835

    3

    58

    56.275

    56.051

    55.152

    54.752

    4

    58

    55.652

    55.402

    54.145

    53.67

    60

    1.5

    60

    59.196

    59.026

    58.612

    58.376

    2

    60

    58.891

    58.701

    58.135

    57.835

    3

    60

    58.275

    58.051

    57.152

    56.752

    4

    60

    57.652

    57.402

    56.145

    55.67

    5.5

    60

    56.708

    56.428

    54.646

    54.046

    62

    1.5

    62

    61.196

    61.026

    60.612

    60.376

    2

    62

    60.891

    60.701

    60.135

    59.835

    3

    62

    60.275

    60.051

    59.152

    58.752

    4

    62

    59.652

    59.402

    58.145

    57.67

    64

    1.5

    64

    63.196

    63.026

    62.612

    62.376

    2

    64

    62.891

    62.701

    62.135

    61.835

    3

    64

    62.275

    62.051

    61.152

    60.752

    4

    64

    61.652

    61.402

    60.145

    59.67

    6

    64

    60.403

    60.103

    58.135

    57.505

    65

    1.5

    65

    64.196

    64.026

    63.612

    63.376

    2

    65

    63.891

    63.701

    63.135

    62.835

    3

    65

    63.275

    63.051

    62.152

    61.752

    4

    65

    62.652

    62.402

    61.145

    60.67

    68

    1.5

    68

    67.196

    67.026

    66.612

    66.376

    2

    68

    66.891

    66.701

    66.135

    65.835

    3

    68

    66.275

    66.051

    65.152

    64.752

    4

    68

    65.652

    65.402

    64.145

    63.67

    6

    68

    64.403

    64.103

    62.135

    61.505

    70

    1.5

    70

    69.196

    69.026

    68.612

    68.376

    2

    70

    68.891

    68.701

    68.135

    67.835

    3

    70

    68.275

    68.051

    67.152

    66.752

    4

    70

    67.652

    67.402

    66.145

    65.67

    6

    70

    66.403

    66.103

    64.135

    63.505

    72

    1.5

    72

    71.196

    71.026

    70.612

    70.376

    2

    72

    70.891

    70.701

    70.135

    69.835

    3

    72

    70.275

    70.051

    69.152

    68.752

    4

    72

    69.652

    69.402

    68.145

    67.67

    6

    72

    68.403

    68.103

    66.135

    65.505

    75

    1.5

    75

    74.196

    74.026

    73.612

    73.376

    2

    75

    73.891

    73.701

    73.135

    72.835

    3

    75

    73.275

    73.051

    72.152

    71.752

    4

    75

    72.652

    72.402

    71.145

    70.67

    76

    1.5

    76

    75.196

    75.026

    74.612

    74.376

    2

    76

    74.891

    74.701

    74.135

    73.835

    3

    76

    74.275

    74.051

    73.152

    72.752

    4

    76

    73.652

    73.402

    72.145

    71.67

    6

    76

    72.403

    72.103

    70.135

    69.505

    78

    2

    78

    76.891

    76.701

    76.135

    75.835

    80

    1.5

    80

    79.196

    79.026

    78.612

    78.376

    2

    80

    78.891

    78.701

    78.135

    77.835

    3

    80

    78.275

    78.051

    77.152

    76.752

    4

    80

    77.652

    77.402

    76.145

    75.67

    6

    80

    76.403

    76.103

    74.135

    73.505

    82

    2

    82

    80.891

    80.701

    80.135

    79.835

    85

    2

    85

    83.891

    83.701

    83.135

    82.835

    3

    85

    83.275

    83.051

    82.152

    81.752

    4

    85

    82.652

    82.402

    81.145

    80.67

    6

    85

    81.403

    81.103

    79.135

    78.505

    90

    2

    90

    88.891

    88.701

    88.135

    87.835

    3

    90

    88.275

    88.051

    87.152

    86.752

    4

    90

    87.652

    87.402

    86.145

    85.67

    6

    90

    86.403

    86.103

    84.135

    83.505

    95

    2

    95

    93.901

    93.701

    93.135

    92.835

    3

    95

    93.287

    93.051

    92.152

    91.752

    4

    95

    92.667

    92.402

    91.145

    90.67

    6

    95

    91.418

    91.103

    89.135

    88.505

    100

    2

    100

    98.901

    98.701

    98.135

    97.835

    3

    100

    98.287

    98.051

    97.152

    96.752

    4

    100

    97.667

    97.402

    96.145

    95.67

    6

    100

    96.418

    96.103

    94.135

    93.505

    105

    2

    105

    103.901

    103.701

    103.135

    102.835

    3

    105

    103.287

    103.051

    102.152

    101.752

    4

    105

    102.667

    102.402

    101.145

    100.67

    6

    105

    101.418

    101.103

    99.135

    98.505

    110

    2

    110

    108.901

    108.701

    108.135

    107.835

    3

    110

    108.287

    108.051

    107.152

    106.752

    4

    110

    107.667

    107.402

    106.145

    105.67

    6

    110

    106.418

    106.103

    104.135

    103.505

    115

    2

    115

    113.901

    113.701

    113.135

    112.835

    3

    115

    113.287

    113.051

    112.152

    111.752

    4

    115

    112.667

    112.402

    111.145

    110.67

    6

    115

    111.418

    111.103

    109.135

    108.505

    120

    2

    120

    118.901

    118.701

    118.135

    117.835

    3

    120

    118.287

    118.051

    117.152

    116.752

    4

    120

    117.667

    117.402

    116.145

    115.67

    6

    120

    116.418

    116.103

    114.135

    113.505

    125

    2

    125

    123.901

    123.701

    123.135

    122.835

    3

    125

    123.287

    123.051

    122.152

    121.752

    4

    125

    122.667

    122.402

    121.145

    120.67

    6

    125

    121.418

    121.103

    119.135

    118.505

    8

    125

    120.159

    119.804

    117.14

    116.34

    130

    2

    130

    128.901

    128.701

    128.135

    127.835

    3

    130

    128.287

    128.051

    127.152

    126.752

    4

    130

    127.667

    127.402

    126.145

    125.67

    6

    130

    126.418

    126.103

    124.135

    123.505

    8

    130

    125.159

    124.804

    122.14

    121.34

    135

    2

    135

    133.901

    133.701

    133.135

    132.835

    3

    135

    133.287

    133.051

    132.152

    131.752

    4

    135

    132.667

    132.402

    131.145

    130.67

    6

    135

    131.418

    131.103

    129.135

    128.505

    140

    2

    140

    138.901

    138.701

    138.135

    137.835

    3

    140

    138.287

    138.051

    137.152

    136.752

    4

    140

    137.667

    137.402

    136.145

    135.67

    6

    140

    136.418

    136.103

    134.135

    133.505

    8

    140

    135.159

    134.804

    132.14

    131.34

    145

    2

    145

    143.901

    143.701

    143.135

    142.835

    3

    145

    143.287

    143.051

    142.152

    141.752

    4

    145

    142.667

    142.402

    141.145

    140.67

    6

    145

    141.418

    141.103

    139.135

    138.505

    150

    2

    150

    148.901

    148.701

    148.135

    147.835

    3

    150

    148.287

    148.051

    147.152

    146.752

    4

    150

    147.667

    147.402

    146.145

    145.67

    6

    150

    146.418

    146.103

    144.135

    143.505

    8

    150

    145.159

    144.804

    142.14

    141.34

    155

    3

    155

    153.287

    153.051

    152.152

    151.752

    4

    155

    152.667

    152.402

    151.145

    150.67

    6

    155

    151.418

    151.103

    149.135

    148.505

    160

    3

    160

    158.287

    158.051

    157.152

    156.752

    4

    160

    157.667

    157.402

    156.145

    155.67

    6

    160

    156.418

    156.103

    154.135

    153.505

    8

    160

    155.159

    154.804

    152.14

    151.34

    165

    3

    165

    163.287

    163.051

    162.152

    161.752

    4

    165

    162.667

    162.402

    161.145

    160.67

    6

    165

    161.418

    161.103

    159.135

    158.505

    170

    3

    170

    168.287

    168.051

    167.152

    166.752

    4

    170

    167.667

    167.402

    166.145

    165.67

    6

    170

    166.418

    166.103

    164.135

    163.505

    8

    170

    165.159

    164.804

    162.14

    161.34

    175

    3

    175

    173.287

    173.051

    172.152

    171.752

    4

    175

    172.667

    172.402

    171.145

    170.67

    6

    175

    171.418

    171.103

    169.135

    168.505

    180

    3

    180

    178.287

    178.051

    177.152

    176.752

    4

    180

    177.667

    177.402

    176.145

    175.67

    6

    180

    176.418

    176.103

    174.135

    173.505

    8

    180

    175.159

    174.804

    172.14

    171.34

    185

    3

    185

    183.316

    183.051

    182.152

    181.752

    4

    185

    182.702

    182.402

    181.145

    180.67

    6

    185

    181.438

    181.103

    179.135

    178.505

    190

    3

    190

    188.316

    188.051

    187.152

    186.752

    4

    190

    187.702

    187.402

    186.145

    185.67

    6

    190

    186.438

    186.103

    184.135

    183.505

    8

    190

    185.179

    184.804

    182.14

    181.34

    195

    3

    195

    193.316

    193.051

    192.152

    191.752

    4

    195

    192.702

    192.402

    191.145

    190.67

    6

    195

    191.438

    191.103

    189.135

    188.505

    200

    3

    200

    198.316

    198.051

    197.152

    196.752

    4

    200

    197.702

    197.402

    196.145

    195.67

    6

    200

    196.438

    196.103

    194.135

    193.505

    8

    200

    195.179

    194.804

    192.14

    191.34

    205

    3

    205

    203.316

    203.051

    202.152

    201.752

    4

    205

    202.702

    202.402

    201.145

    200.67

    6

    205

    201.438

    201.103

    199.135

    198.505

    210

    3

    210

    208.316

    208.051

    207.152

    206.752

    4

    210

    207.702

    207.402

    206.145

    205.67

    6

    210

    206.438

    206.103

    204.135

    203.505

    8

    210

    205.179

    204.804

    202.14

    201.34

    215

    3

    215

    213.316

    213.051

    212.152

    211.752

    4

    215

    212.702

    212.402

    211.145

    210.67

    6

    215

    211.438

    211.103

    209.135

    208.505

    220

    3

    220

    218.316

    218.051

    217.152

    216.752

    4

    220

    217.702

    217.402

    216.145

    215.67

    6

    220

    216.438

    216.103

    214.135

    213.505

    8

    220

    215.179

    214.804

    212.14

    211.34

    225

    3

    225

    223.316

    223.051

    222.152

    221.752

    4

    225

    222.702

    222.402

    221.145

    220.67

    6

    225

    221.438

    221.103

    219.135

    218.505

    230

    3

    230

    228.316

    228.051

    227.152

    226.752

    4

    230

    227.702

    227.402

    226.145

    225.67

    6

    230

    226.438

    226.103

    224.135

    223.505

    8

    230

    225.179

    224.804

    222.14

    221.34

    235

    3

    235

    233.316

    233.051

    232.152

    231.752

    4

    235

    232.702

    232.402

    231.145

    230.67

    6

    235

    231.438

    231.103

    229.135

    228.505

    240

    3

    240

    238.316

    238.051

    237.152

    236.752

    4

    240

    237.702

    237.402

    236.145

    235.67

    6

    240

    236.438

    236.103

    234.135

    233.505

    8

    240

    235.179

    234.804

    232.14

    231.34

    245

    3

    245

    243.316

    243.051

    242.152

    241.752

    4

    245

    242.702

    242.402

    241.145

    240.67

    6

    245

    241.438

    241.103

    239.135

    238.505

    250

    3

    250

    248.316

    248.051

    247.152

    246.752

    4

    250

    247.702

    247.402

    246.145

    245.67

    6

    250

    246.438

    246.103

    244.135

    243.505

    8

    250

    245.179

    244.804

    242.14

    241.34

    255

    4

    255

    252.702

    252.402

    251.145

    250.67

    6

    255

    251.438

    251.103

    249.135

    248.505

    260

    4

    260

    257.702

    257.402

    256.145

    255.67

    6

    260

    256.438

    256.103

    254.135

    253.505

    8

    260

    255.179

    254.804

    252.14

    251.34

    265

    4

    265

    262.702

    262.402

    261.145

    260.67

    6

    265

    261.438

    261.103

    259.135

    258.505

    270

    4

    270

    267.702

    267.402

    266.145

    265.67

    6

    270

    266.438

    266.103

    264.135

    263.505

    8

    270

    265.179

    264.804

    262.14

    261.34

    275

    4

    275

    272.702

    272.402

    271.145

    270.67

    6

    275

    271.438

    271.103

    269.135

    268.505

    280

    4

    280

    277.702

    277.402

    276.145

    275.67

    6

    280

    276.438

    276.103

    274.135

    273.505

    8

    280

    275.179

    274.804

    272.14

    271.34

    285

    4

    285

    282.702

    282.402

    281.145

    280.67

    6

    285

    281.438

    281.103

    279.135

    278.505

    290

    4

    290

    287.702

    287.402

    286.145

    285.67

    6

    290

    286.438

    286.103

    284.135

    283.505

    8

    290

    285.179

    284.804

    282.14

    281.34

    295

    4

    295

    292.702

    292.402

    291.145

    290.67

    6

    295

    291.438

    291.103

    289.135

    288.505

    300

    4

    300

    297.702

    297.402

    296.145

    295.67

    6

    300

    296.438

    296.103

    294.135

    293.505

    8

    300

    295.179

    294.804

    292.14

    291.34

  • Tolerance zone 6H: Table 3 of the limit dimensions of internal threads with a nominal diameter of 1.4mm~300mm

    Table 3 Limit dimensions of 6H internal thread

    Nominal diameter

    D

    pitch

    P

    Da Jia

    Dmin _

    Medium diameter

    trails

    D2max _

    D2min _

    D1max _

    D 1min

    1.4

    0.3

    1.4

    1.28

    1.205

    1.16

    1.075

    1.6

    0.35

    1.6

    1.458

    1.373

    1.321

    1.221

    1.8

    0.35

    1.8

    1.658

    1.573

    1.521

    1.421

    2

    0.4

    2

    1.83

    1.74

    1.679

    1.567

    2.2

    0.45

    2.2

    2.003

    1.908

    1.838

    1.713

    2.5

    0.35

    2.5

    2.358

    2.273

    2.221

    2.121

    0.45

    2.5

    2.303

    2.208

    2.138

    2.013

    3

    0.35

    3

    2.863

    2.773

    2.721

    2.621

    0.5

    3

    2.775

    2.675

    2.599

    2.459

    3.5

    0.35

    3.5

    3.363

    3.273

    3.221

    3.121

    0.6

    3.5

    3.222

    3.11

    3.01

    2.85

    4

    0.5

    4

    3.775

    3.675

    3.599

    3.459

    0.7

    4

    3.663

    3.545

    3.422

    3.242

    4.5

    0.5

    4.5

    4.275

    4.175

    4.099

    3.959

    0.75

    4.5

    4.131

    4.013

    3.878

    3.688

    5

    0.5

    5

    4.775

    4.675

    4.599

    4.459

    0.8

    5

    4.605

    4.48

    4.334

    4.134

    5.5

    0.5

    5.5

    5.275

    5.175

    5.099

    4.959

    6

    0.75

    6

    5.645

    5.513

    5.378

    5.188

    1

    6

    5.5

    5.35

    5.153

    4.917

    7

    0.75

    7

    6.645

    6.513

    6.378

    6.188

    1

    7

    6.5

    6.35

    6.153

    5.917

    8

    0.75

    8

    7.645

    7.513

    7.378

    7.188

    1

    8

    7.5

    7.35

    7.153

    6.917

    1.25

    8

    7.348

    7.188

    6.912

    6.647

    9

    0.75

    9

    8.645

    8.513

    8.378

    8.188

    1

    9

    8.5

    8.35

    8.153

    7.917

    1.25

    9

    8.348

    8.188

    7.912

    7.647

    10

    0.75

    10

    9.645

    9.513

    9.378

    9.188

    1

    10

    9.5

    9.35

    9.153

    8.917

    1.25

    10

    9.348

    9.188

    8.912

    8.647

    1.5

    10

    9.206

    9.026

    8.676

    8.376

    11

    0.75

    11

    10.645

    10.513

    10.378

    10.188

    1

    11

    10.5

    10.35

    10.153

    9.917

    1.5

    11

    10.206

    10.026

    9.676

    9.376

    12

    1

    12

    11.51

    11.35

    11.153

    10.917

    1.25

    12

    11.368

    11.188

    10.912

    10.647

    1.5

    12

    11.216

    11.026

    10.676

    10.376

    1.75

    12

    11.063

    10.863

    10.441

    10.106

    14

    1

    14

    13.51

    13.35

    13.153

    12.917

    1.5

    14

    13.216

    13.026

    12.676

    12.376

    2

    14

    12.913

    12.701

    12.21

    11.835

    15

    1

    15

    14.51

    14.35

    14.153

    13.917

    1.5

    15

    14.216

    14.026

    13.676

    13.376

    16

    1

    16

    15.51

    15.35

    15.153

    14.917

    1.5

    16

    15.216

    15.026

    14.676

    14.376

    2

    16

    14.913

    14.701

    14.21

    13.835

    17

    1

    17

    16.51

    16.35

    16.153

    15.917

    1.5

    17

    16.216

    16.026

    15.676

    15.376

    18

    1

    18

    17.51

    17.35

    17.153

    16.917

    1.5

    18

    17.216

    17.026

    16.676

    16.376

    2

    18

    16.913

    16.701

    16.21

    15.835

    2.5

    18

    16.6

    16.376

    15.744

    15.294

    20

    1

    20

    19.51

    19.35

    19.153

    18.917

    1.5

    20

    19.216

    19.026

    18.676

    18.376

    2

    20

    18.913

    18.701

    18.21

    17.835

    2.5

    20

    18.6

    18.376

    17.744

    17.294

    22

    1

    22

    21.51

    21.35

    21.153

    20.917

    1.5

    22

    21.216

    21.026

    20.676

    20.376

    2

    22

    20.913

    20.701

    20.21

    19.835

    2.5

    22

    20.6

    20.376

    19.744

    19.294

    24

    1

    24

    23.52

    23.35

    23.153

    22.917

    1.5

    24

    23.226

    23.026

    22.676

    22.376

    2

    24

    22.925

    22.701

    22.21

    21.835

    3

    24

    22.316

    22.051

    21.252

    20.752

    25

    1

    25

    24.52

    24.35

    24.153

    23.917

    1.5

    25

    24.226

    24.026

    23.676

    23.376

    2

    25

    23.925

    23.701

    23.21

    22.835

    26

    1.5

    26

    25.226

    25.026

    24.676

    24.376

    27

    1

    27

    26.52

    26.35

    26.153

    25.917

    1.5

    27

    26.226

    26.026

    25.676

    25.376

    2

    27

    25.925

    25.701

    25.21

    24.835

    3

    27

    25.316

    25.051

    24.252

    23.752

    28

    1

    28

    27.52

    27.35

    27.153

    26.917

    1.5

    28

    27.226

    27.026

    26.676

    26.376

    2

    28

    26.925

    26.701

    26.21

    25.835

    30

    1

    30

    29.52

    29.35

    29.153

    28.917

    1.5

    30

    29.226

    29.026

    28.676

    28.376

    2

    30

    28.925

    28.701

    28.21

    27.835

    3

    30

    28.316

    28.051

    27.252

    26.752

    3.5

    30

    28.007

    27.727

    26.771

    26.211

    32

    1.5

    32

    31.226

    31.026

    30.676

    30.376

    2

    32

    30.925

    30.701

    30.21

    29.835

    33

    1.5

    33

    32.226

    32.026

    31.676

    31.376

    2

    33

    31.925

    31.701

    31.21

    30.835

    3

    33

    31.316

    31.051

    30.252

    29.752

    3.5

    33

    31.007

    30.727

    29.771

    29.211

    36

    1.5

    36

    35.226

    35.026

    34.676

    34.376

    2

    36

    34.925

    34.701

    34.21

    33.835

    3

    36

    34.316

    34.051

    33.252

    32.752

    4

    36

    33.702

    33.402

    32.27

    31.67

    38

    1.5

    38

    37.226

    37.026

    36.676

    36.376

    39

    1.5

    39

    38.226

    38.026

    37.676

    37.376

    2

    39

    37.925

    37.701

    37.21

    36.835

    3

    39

    37.316

    37.051

    36.252

    35.752

    4

    39

    36.702

    36.402

    35.27

    34.67

    40

    1.5

    40

    39.226

    39.026

    38.676

    38.376

    2

    40

    38.925

    38.701

    38.21

    37.835

    3

    40

    38.316

    38.051

    37.252

    36.752

    42

    1.5

    42

    41.226

    41.026

    40.676

    40.376

    2

    42

    40.925

    40.701

    40.21

    39.835

    3

    42

    40.316

    40.051

    39.252

    38.752

    4

    42

    39.702

    39.402

    38.27

    37.67

    4.5

    42

    39.392

    39.077

    37.799

    37.129

    45

    1.5

    45

    44.226

    44.026

    43.676

    43.376

    2

    45

    43.925

    43.701

    43.21

    42.835

    3

    45

    43.316

    43.051

    42.252

    41.752

    4

    45

    42.702

    42.402

    41.27

    40.67

    4.5

    45

    42.392

    42.077

    40.799

    40.129

    48

    1.5

    48

    47.238

    47.026

    46.676

    46.376

    2

    48

    46.937

    46.701

    46.21

    45.835

    3

    48

    46.331

    46.051

    45.252

    44.752

    4

    48

    45.717

    45.402

    44.27

    43.67

    5

    48

    45.087

    44.752

    43.297

    42.587

    50

    1.5

    50

    49.238

    49.026

    48.676

    48.376

    2

    50

    48.937

    48.701

    48.21

    47.835

    3

    50

    48.331

    48.051

    47.252

    46.752

    52

    1.5

    52

    51.238

    51.026

    50.676

    50.376

    2

    52

    50.937

    50.701

    50.21

    49.835

    3

    52

    50.331

    50.051

    49.252

    48.752

    4

    52

    49.717

    49.402

    48.27

    47.67

    5

    52

    49.087

    48.752

    47.297

    46.587

    55

    1.5

    55

    54.238

    54.026

    53.676

    53.376

    2

    55

    53.937

    53.701

    53.21

    52.835

    3

    55

    53.331

    53.051

    52.252

    51.752

    4

    55

    52.717

    52.402

    51.27

    50.67

    56

    1.5

    56

    55.238

    55.026

    54.676

    54.376

    2

    56

    54.937

    54.701

    54.21

    53.835

    3

    56

    54.331

    54.051

    53.252

    52.752

    4

    56

    53.717

    53.402

    52.27

    51.67

    5.5

    56

    52.783

    52.428

    50.796

    50.046

    58

    1.5

    58

    57.238

    57.026

    56.676

    56.376

    2

    58

    56.937

    56.701

    56.21

    55.835

    3

    58

    56.331

    56.051

    55.252

    54.752

    4

    58

    55.717

    55.402

    54.27

    53.67

    60

    1.5

    60

    59.238

    59.026

    58.676

    58.376

    2

    60

    58.937

    58.701

    58.21

    57.835

    3

    60

    58.331

    58.051

    57.252

    56.752

    4

    60

    57.717

    57.402

    56.27

    55.67

    5.5

    60

    56.783

    56.428

    54.796

    54.046

    62

    1.5

    62

    61.238

    61.026

    60.676

    60.376

    2

    62

    60.937

    60.701

    60.21

    59.835

    3

    62

    60.331

    60.051

    59.252

    58.752

    4

    62

    59.717

    59.402

    58.27

    57.67

    64

    1.5

    64

    63.238

    63.026

    62.676

    62.376

    2

    64

    62.937

    62.701

    62.21

    61.835

    3

    64

    62.331

    62.051

    61.252

    60.752

    4

    64

    61.717

    61.402

    60.27

    59.67

    6

    64

    60.478

    60.103

    58.305

    57.505

    65

    1.5

    65

    64.238

    64.026

    63.676

    63.376

    2

    65

    63.937

    63.701

    63.21

    62.835

    3

    65

    63.331

    63.051

    62.252

    61.752

    4

    65

    62.717

    62.402

    61.27

    60.67

    68

    1.5

    68

    67.238

    67.026

    66.676

    66.376

    2

    68

    66.937

    66.701

    66.21

    65.835

    3

    68

    66.331

    66.051

    65.252

    64.752

    4

    68

    65.717

    65.402

    64.27

    63.67

    6

    68

    64.478

    64.103

    62.305

    61.505

    70

    1.5

    70

    69.238

    69.026

    68.676

    68.376

    2

    70

    68.937

    68.701

    68.21

    67.835

    3

    70

    68.331

    68.051

    67.252

    66.752

    4

    70

    67.717

    67.402

    66.27

    65.67

    6

    70

    66.478

    66.103

    64.305

    63.505

    72

    1.5

    72

    71.238

    71.026

    70.676

    70.376

    2

    72

    70.937

    70.701

    70.21

    69.835

    3

    72

    70.331

    70.051

    69.252

    68.752

    4

    72

    69.717

    69.402

    68.27

    67.67

    6

    72

    68.478

    68.103

    66.305

    65.505

    75

    1.5

    75

    74.238

    74.026

    73.676

    73.376

    2

    75

    73.937

    73.701

    73.21

    72.835

    3

    75

    73.331

    73.051

    72.252

    71.752

    4

    75

    72.717

    72.402

    71.27

    70.67

    76

    1.5

    76

    75.238

    75.026

    74.676

    74.376

    2

    76

    74.937

    74.701

    74.21

    73.835

    3

    76

    74.331

    74.051

    73.252

    72.752

    4

    76

    73.717

    73.402

    72.27

    71.67

    6

    76

    72.478

    72.103

    70.305

    69.505

    78

    2

    78

    76.937

    76.701

    76.21

    75.835

    80

    1.5

    80

    79.238

    79.026

    78.676

    78.376

    2

    80

    78.937

    78.701

    78.21

    77.835

    3

    80

    78.331

    78.051

    77.252

    76.752

    4

    80

    77.717

    77.402

    76.27

    75.67

    6

    80

    76.478

    76.103

    74.305

    73.505

    82

    2

    82

    80.937

    80.701

    80.21

    79.835

    85

    2

    85

    83.937

    83.701

    83.21

    82.835

    3

    85

    83.331

    83.051

    82.252

    81.752

    4

    85

    82.717

    82.402

    81.27

    80.67

    6

    85

    81.478

    81.103

    79.305

    78.505

    90

    2

    90

    88.937

    88.701

    88.21

    87.835

    3

    90

    88.331

    88.051

    87.252

    86.752

    4

    90

    87.717

    87.402

    86.27

    85.67

    6

    90

    86.478

    86.103

    84.305

    83.505

    95

    2

    95

    93.951

    93.701

    93.21

    92.835

    3

    95

    93.351

    93.051

    92.252

    91.752

    4

    95

    92.737

    92.402

    91.27

    90.67

    6

    95

    91.503

    91.103

    89.305

    88.505

    100

    2

    100

    98.951

    98.701

    98.21

    97.835

    3

    100

    98.351

    98.051

    97.252

    96.752

    4

    100

    97.737

    97.402

    96.27

    95.67

    6

    100

    96.503

    96.103

    94.305

    93.505

    105

    2

    105

    103.951

    103.701

    103.21

    102.835

    3

    105

    103.351

    103.051

    102.252

    101.752

    4

    105

    102.737

    102.402

    101.27

    100.67

    6

    105

    101.503

    101.103

    99.305

    98.505

    110

    2

    110

    108.951

    108.701

    108.21

    107.835

    3

    110

    108.351

    108.051

    107.252

    106.752

    4

    110

    107.737

    107.402

    106.27

    105.67

    6

    110

    106.503

    106.103

    104.305

    103.505

    115

    2

    115

    113.951

    113.701

    113.21

    112.835

    3

    115

    113.351

    113.051

    112.252

    111.752

    4

    115

    112.737

    112.402

    111.27

    110.67

    6

    115

    111.503

    111.103

    109.305

    108.505

    120

    2

    120

    118.951

    118.701

    118.21

    117.835

    3

    120

    118.351

    118.051

    117.252

    116.752

    4

    120

    117.737

    117.402

    116.27

    115.67

    6

    120

    116.503

    116.103

    114.305

    113.505

    125

    2

    125

    123.951

    123.701

    123.21

    122.835

    3

    125

    123.351

    123.051

    122.252

    121.752

    4

    125

    122.737

    122.402

    121.27

    120.67

    6

    125

    121.503

    121.103

    119.305

    118.505

    8

    125

    120.254

    119.804

    117.34

    116.34

    130

    2

    130

    128.951

    128.701

    128.21

    127.835

    3

    130

    128.351

    128.051

    127.252

    126.752

    4

    130

    127.737

    127.402

    126.27

    125.67

    6

    130

    126.503

    126.103

    124.305

    123.505

    8

    130

    125.254

    124.804

    122.34

    121.34

    135

    2

    135

    133.951

    133.701

    133.21

    132.835

    3

    135

    133.351

    133.051

    132.252

    131.752

    4

    135

    132.737

    132.402

    131.27

    130.67

    6

    135

    131.503

    131.103

    129.305

    128.505

    140

    2

    140

    138.951

    138.701

    138.21

    137.835

    3

    140

    138.351

    138.051

    137.252

    136.752

    4

    140

    137.737

    137.402

    136.27

    135.67

    6

    140

    136.503

    136.103

    134.305

    133.505

    8

    140

    135.254

    134.804

    132.34

    131.34

    145

    2

    145

    143.951

    143.701

    143.21

    142.835

    3

    145

    143.351

    143.051

    142.252

    141.752

    4

    145

    142.737

    142.402

    141.27

    140.67

    6

    145

    141.503

    141.103

    139.305

    138.505

    150

    2

    150

    148.951

    148.701

    148.21

    147.835

    3

    150

    148.351

    148.051

    147.252

    146.752

    4

    150

    147.737

    147.402

    146.27

    145.67

    6

    150

    146.503

    146.103

    144.305

    143.505

    8

    150

    145.254

    144.804

    142.34

    141.34

    155

    3

    155

    153.351

    153.051

    152.252

    151.752

    4

    155

    152.737

    152.402

    151.27

    150.67

    6

    155

    151.503

    151.103

    149.305

    148.505

    160

    3

    160

    158.351

    158.051

    157.252

    156.752

    4

    160

    157.737

    157.402

    156.27

    155.67

    6

    160

    156.503

    156.103

    154.305

    153.505

    8

    160

    155.254

    154.804

    152.34

    151.31

    165

    3

    165

    163.351

    163.051

    162.252

    161.752

    4

    165

    162.737

    162.402

    161.27

    160.67

    6

    165

    161.503

    161.103

    159.305

    158.505

    170

    3

    170

    168.351

    168.051

    167.252

    166.752

    4

    170

    167.737

    167.402

    166.27

    165.67

    6

    170

    166.503

    166.103

    164.305

    163.505

    8

    170

    165.254

    164.804

    162.34

    161.34

    175

    3

    175

    173.351

    173.051

    172.252

    171.752

    4

    175

    172.737

    172.402

    171.27

    170.67

    6

    175

    171.503

    171.103

    169.305

    168.505

    180

    3

    180

    178.351

    178.051

    177.252

    176.752

    4

    180

    177.737

    177.402

    176.27

    175.67

    6

    180

    176.503

    176.103

    174.305

    173.505

    8

    180

    175.254

    174.804

    172.34

    171.34

    185

    3

    185

    183.386

    183.051

    182.252

    181.752

    4

    185

    182.777

    182.402

    181.27

    180.67

    6

    185

    181.528

    181.103

    179.305

    178.505

    190

    3

    190

    188.386

    188.051

    187.252

    186.752

    4

    190

    187.777

    187.402

    186.27

    185.67

    6

    190

    186.528

    186.103

    184.305

    183.505

    8

    190

    185.279

    184.804

    182.34

    181.34

    195

    3

    195

    193.386

    193.051

    192.252

    191.752

    4

    195

    192.777

    192.402

    191.27

    190.67

    6

    195

    191.528

    191.103

    189.305

    188.505

    200

    3

    200

    198.386

    198.051

    197.252

    196.752

    4

    200

    197.777

    197.402

    196.27

    195.67

    6

    200

    196.528

    196.103

    194.305

    193.505

    8

    200

    195.279

    194.804

    192.34

    191.34

    205

    3

    205

    203.386

    203.051

    202.252

    201.752

    4

    205

    202.777

    202.402

    201.27

    200.67

    6

    205

    201.528

    201.103

    199.305

    198.505

    210

    3

    210

    208.386

    208.051

    207.252

    206.752

    4

    210

    207.777

    207.402

    206.27

    205.67

    6

    210

    206.528

    206.103

    204.305

    203.505

    8

    210

    205.279

    204.804

    202.34

    201.34

    215

    3

    215

    213.386

    213.051

    212.252

    211.752

    4

    215

    212.777

    212.402

    211.27

    210.67

    6

    215

    211.528

    211.103

    209.305

    208.505

    220

    3

    220

    218.386

    218.051

    217.252

    216.752

    4

    220

    217.777

    217.402

    216.27

    215.67

    6

    220

    216.528

    216.103

    214.305

    213.505

    8

    220

    215.279

    214.804

    212.34

    211.34

    225

    3

    225

    223.386

    223.051

    222.252

    221.752

    4

    225

    222.777

    222.402

    221.27

    220.67

    6

    225

    221.528

    221.103

    219.305

    218.505

    230

    3

    230

    228.386

    228.051

    227.252

    226.752

    4

    230

    227.777

    227.402

    226.27

    225.67

    6

    230

    226.528

    226.103

    224.305

    223.505

    8

    230

    225.279

    224.804

    222.34

    221.34

    235

    3

    235

    233.386

    233.051

    232.252

    231.752

    4

    235

    232.777

    232.402

    231.27

    230.67

    6

    235

    231.528

    231.103

    229.305

    228.505

    240

    3

    240

    238.386

    238.051

    237.252

    236.752

    4

    240

    237.777

    237.402

    236.27

    235.67

    6

    240

    236.528

    236.103

    234.305

    233.505

    8

    240

    235.279

    234.804

    232.34

    231.34

    245

    3

    245

    243.386

    243.051

    242.252

    241.752

    4

    245

    242.777

    242.402

    241.27

    240.67

    6

    245

    241.528

    241.103

    239.305

    238.505

    250

    3

    250

    248.386

    248.051

    247.252

    246.752

    4

    250

    247.777

    247.402

    246.27

    245.67

    6

    250

    246.528

    246.103

    244.305

    243.505

    8

    250

    245.279

    244.804

    242.34

    241.34

    255

    4

    255

    252.777

    252.402

    251.27

    250.67

    6

    255

    251.528

    251.103

    249.305

    248.505

    260

    4

    260

    257.777

    257.402

    256.27

    255.67

    6

    260

    256.528

    256.103

    254.305

    253.505

    8

    260

    255.279

    254.804

    252.34

    251.34

    265

    4

    265

    262.777

    262.402

    261.27

    260.67

    6

    265

    261.528

    261.103

    259.305

    258.505

    270

    4

    270

    267.777

    267.402

    266.27

    265.67

    6

    270

    266.528

    266.103

    264.305

    263.505

    8

    270

    265.279

    264.804

    262.34

    261.34

    275

    4

    275

    272.777

    272.402

    271.27

    270.67

    6

    275

    271.528

    271.103

    269.305

    268.505

    280

    4

    280

    277.777

    277.402

    276.27

    275.67

    6

    280

    276.528

    276.103

    274.305

    273.505

    8

    280

    275.279

    274.804

    272.34

    271.34

    285

    4

    285

    282.777

    282.402

    281.27

    280.67

    6

    285

    281.528

    281.103

    279.305

    278.505

    290

    4

    290

    287.777

    287.402

    286.27

    285.67

    6

    290

    286.528

    286.103

    284.305

    283.505

    8

    290

    285.279

    284.804

    282.34

    281.34

    295

    4

    295

    292.777

    292.402

    291.27

    290.67

    6

    295

    291.528

    291.103

    289.305

    288.505

    300

    4

    300

    297.777

    297.402

    296.27

    295.67

    6

    300

    296.528

    296.103

    294.305

    293.505

    8

    300

    295.279

    294.804

    292.34

    291.34

  • Tolerance zone 7H: Table 4 of the limit dimensions of internal threads with a nominal diameter of 3mm~200mm

    Table 4 Limit dimensions of 7H internal thread

    Nominal diameter

    D

    pitch

    P

    Da Jia

    Dmin _

    Medium diameter

    trails

    D2min _

    D2min _

    D 1min

    D 1min

    3

    0.5

    3

    2.8

    2.675

    2.639

    2.459

    3.5

    0.6

    3.5

    3.25

    3.11

    3.05

    2.85

    4

    0.5

    4

    3.8

    3.675

    3.639

    3.459

    0.7

    4

    3.695

    3.545

    3.466

    3.242

    4.5

    0.5

    4.5

    4.3

    4.175

    4.139

    3.959

    0.75

    4.5

    4.163

    4.013

    3.924

    3.688

    5

    0.5

    5

    4.8

    4.675

    4.639

    4.459

    0.8

    5

    4.64

    4.48

    4.384

    4.134

    5.5

    0.5

    5.5

    5.3

    5.175

    5.139

    4.959

    6

    0.75

    6

    5.683

    5.513

    5.424

    5.188

    1

    6

    5.54

    5.35

    5.217

    4.917

    7

    0.75

    7

    6.683

    6.513

    6.424

    6.188

    1

    7

    6.54

    6.35

    6.217

    5.917

    8

    0.75

    8

    7.683

    7.513

    7.424

    7.188

    1

    8

    7.54

    7.35

    7.217

    6.917

    1.25

    8

    7.388

    7.188

    6.982

    6.647

    9

    0.75

    9

    8.683

    8.513

    8.424

    8.188

    1

    9

    8.54

    8.35

    8.217

    7.917

    1.25

    9

    8.388

    8.188

    7.982

    7.647

    10

    0.75

    10

    9.683

    9.513

    9.424

    9.188

    1

    10

    9.54

    9.35

    9.217

    8.917

    1.25

    10

    9.388

    </