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Standard Pitch Diameter Chart - Metric

Thread Ring Gages 

 

NOMINAL SIZE & PITCH

FOR EXTERNALTHREAD

FOR INTERNALTHREAD

PITCH DIAMETER GO RINGGAGE 6g TOLERANCE

PITCH DIAMETER NOT GO RINGGAGE 6g TOLERANCE

PITCH DIAMETER GO PLUGGAGE 6H TOLERANCE

PITCH DIAMETER NOT GO PLUGGAGE 6H TOLERANCE

MM

IN. (REF)

MM

IN. (REF)

MM

IN. (REF)

MM

IN. (REF)

M

1.6

X

0.35

1.354

.05331

1.291

.05083

1.373

.05406

1.458

.05740

M

2

X

0.4

1.721

.06776

1.654

.06512

1.740

.06850

1.830

.07205

M

2.5

X

0.45

2.188

.08614

2.117

.08335

2.208

.08693

2.303

.09067

M

3

X

0.5

2.655

.10453

2.580

.10157

2.675

.10531

2.775

.10925

M

3.5

X

0.6

3.089

.12161

3.004

.11827

3.110

.12244

3.222

.12685

M

4

X

0.7

3.523

.13870

3.433

.13516

3.545

.13957

3.663

.14421

M

5

X

0.8

4.456

.17543

4.361

.17169

4.480

.17638

4.605

.18130

M

6

X

1.0

5.324

.20961

5.212

.20520

5.350

.21063

5.500

.21654

M

8

X

1.25

7.160

.28189

7.042

.27724

7.188

.28299

7.348

.28929

M

8

X

1.0

7.324

.28835

7.212

.28394

7.350

.28937

7.500

.29528

M

10

X

1.5

8.994

.35409

8.862

.34890

9.026

.35535

9.206

.36244

M

10

X

1.25

9.160

.36063

9.042

.35598

9.188

.36173

9.348

.36803

M

10

X

1.0

9.324

.36709

9.212

.36268

9.350

.36811

9.500

.37402

M

10

X

0.75

9.491

.37366

9.391

.36972

9.513

.37453

9.645

.37972

M

12

X

1.75

10.829

.42634

10.679

.42043

10.863

.42768

11.063

.43555

M

12

X

1.5

10.994

.43283

10.854

.42732

11.026

.43409

11.216

.44157

M

12

X

1.25

11.160

.43937

11.028

.43417

11.188

.44047

11.368

.44756

M

12

X

1.0

11.324

.44583

11.206

.44118

11.350

.44685

11.510

.45315

M

14

X

2.0

12.663

.49854

12.503

.49224

12.701

.50004

12.913

.50839

M

14

X

1.5

12.994

.51157

12.854

.50606

13.026

.51283

13.216

.52031

M

15

X

1.0

14.324

.56394

14.206

.55929

14.350

.56496

14.510

.57126

M

16

X

2.0

14.663

.57728

14.503

.57098

14.701

.57878

14.913

.58713

M

16

X

1.5

14.994

.59031

14.854

.58480

15.026

.59157

15.216

.59906

M

17

X

1.0

16.324

.64268

16.206

.63803

16.350

.64370

16.510

.65000

M

18

X

1.5

16.994

.66906

16.854

.66354

17.026

.67031

17.216

.67780

M

20

X

2.5

18.334

.72181

18.164

.71512

18.376

.72346

18.600

.73228

M

20

X

1.5

18.994

.74780

18.854

.74228

19.026

.74906

19.216

.75654

M

20

X

1.0

19.324

.76079

19.206

.75614

19.350

.76181

19.510

.76811

M

22

X

2.5

20.334

.80055

20.164

.79386

20.376

.80220

20.600

.81102

M

22

X

1.5

20.994

.82654

20.854

.82102

21.026

.82780

21.216

.83528

M

24

X

3.0

22.003

.86626

21.803

.85839

22.051

.86815

22.316

.87858

M

24

X

2.0

22.663

.89224

22.493

.88555

22.701

.89374

22.925

.90256

M

25

X

1.5

23.994

.94465

23.844

.93874

24.026

.94591

24.226

.95378

M

27

X

3.0

25.003

.98437

24.803

.97650

25.051

.98626

25.316

.99669

M

27

X

2.0

25.663

1.01035

25.493

1.00366

25.701

1.01185

25.925

1.02067

M

30

X

3.5

27.674

1.08953

27.642

1.08118

27.727

1.09161

28.007

1.10264

M

30

X

2.0

28.663

1.12846

28.493

1.12177

28.701

1.12996

28.925

1.13878

M

30

X

1.5

28.994

1.14150

28.844

1.13559

29.026

1.14276

29.226

1.15063

M

33

X

2.0

31.663

1.24657

31.493

1.23988

31.701

1.24807

31.925

1.25689

M

35

X

1.5

33.994

1.33835

33.844

1.33244

34.026

1.33961

34.226

1.34748

M

36

X

4.0

33.342

1.31268

33.118

1.30386

33.402

1.31504

33.702

1.32685

M

36

X

2.0

34.663

1.36469

34.493

1.35799

34.701

1.36618

34.925

1.37500

M

39

X

2.0

37.663

1.48280

37.493

1.47610

37.701

1.48429

37.925

1.49311

 

ANSI / ASME B1.13M-1995, Metric Screw Threads – M Profile

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