美制细牙 UNF Machine Screw 2A (60°)              (mm)

规格

牙数

外径(2A)

中径(2A)

材料径(2A)

基准

最大

最小

基准

最大

最小

最大

最小

2

64

2.184

2.169

2.073

1.928

1.913

1.862

1.900

1.875

3

56

2.515

2.497

2.393

2.220

2.202

2.146

2.189

2.161

4

48

2.845

2.827

2.713

2.502

2.484

2.423

2.471

2.440

5

44

3.175

3.157

3.035

2.799

2.781

2.718

2.768

2.736

6

40

3.505

3.485

3.355

3.094

3.073

3.007

3.061

3.028

8

36

4.166

4.145

4.006

3.708

3.688

3.617

3.674

3.639

10

32

4.826

4.803

4.651

4.310

4.288

4.211

4.273

4.235

12

28

5.486

5.461

5.296

4.897

4.872

4.790

4.858

4.818

1/4

28

6.350

6.325

6.160

5.761

5.735

5.652

5.718

5.676

5/16

24

7.938

7.910

7.727

7.249

7.221

7.127

7.202

7.155

3/8

24

9.525

9.497

9.314

8.837

8.809

8.712

8.786

8.737

7/16

20

11.100

11.067

10.861

10.287

10.254

10.147

10.231

10.178

1/2

20

12.700

12.667

12.461

11.875

11.841

11.732

11.816

11.761

9/16

18

14.288

14.252

14.031

13.371

13.335

13.221

13.310

13.252

5/8

18

15.875

15.839

15.618

14.958

14.923

14.803

14.893

14.833

3/4

16

19.050

19.012

18.773

18.019

17.981

17.854

17.950

17.887

7/8

14

22.225

22.184

21.923

21.046

21.006

20.869

20.975

20.906

1

12

25.400

25.354

25.065

24.026

23.980

23.830

23.949

23.874