最小尺寸

Min

最大尺寸

Max

No.1-64 UNC

1.55

1.57(65%)

1.425

1.582

No.2-56 UNC

1.8

1.86(65%)

1.695

1.871

No.3-48 UNC

2.1

2.14(65%)

1.941

2.146

No.4-40 UNC

2.3

2.36(70%)

2.157

2.385

No.5-40 UNC

2.6

2.69(70%)

2.487

2.697

No.6-32 UNC

2.8

2.86(75%)

2.642

2.895

No.8-32 UNC

3.4

3.52(75%)

3.302

3.530

No.10-24UNC

3.9

3.91(80%)

3.683

3.962

No.12-24UNC

4.5

4.57(80%)

4.344

4.597

1/4-20 UNC

5.1

5.25(80%)

4.979

5.257

5/16-18 UNC

6.6

6.72(80%)

6.401

6.731

3/8-16 UNC

8.0

8.15(80%)

7.798

8.153

7/16-14 UNC

9.4

9.5(80%)

9.144

9.550

1/2-13 UNC

10.8

11.0(80%)

10.592

11.023

9/16-12 UNC

12.2

12.3(85%)

11.989

12.446

5/8-11 UNC

13.6

13.8(85%)

13.386

13.868

3/4-10 UNC

16.5

16.8(85%)

16.307

16.840

7/8-9 UNC

19.5

19.6(85%)

19.177

19.761

1-8 UNC

22.2

22.5(85%)

21.971

22.606

1 1/8-7 UNC

25.0

25.2(85%)

24.638

25.349

1 1/4-7 UNC

28.2

28.4(85%)

27.813

28.524

1 3/8-6 UNC

30.8

31.0(85%)

30.353

31.115

1 1/2-6 UNC

34.0

34.2(85%)

33.528

34.290

1 3/4-5UNC

39.5

39.8(85%)

38.964

39.827

2-4 1/2UNC

45.2

45.3(90%)

44.679

45.593