公称尺寸

外径

d = d

节径

D2 = D2

内径

D1 = D1

公称尺寸

外径

d = d

节径

D2 = D2

内径

D1 = D1

粗牙UNC

细牙UNF

粗牙UNC

细牙UNF

＃0-80

1.524

1.318

1.181

7 / 16-14

---

11.112

9.934

9.149

＃1-64

---

1.854

1.598

1.425

7 / 16-20

11.112

10.287

9.738

＃1-72

1.854

1.626

1.473

2 / 1-13

---

12.700

11.430

10.584

＃2-56

---

2.184

1.890

1.694

2 / 1-20

12.700

11.874

11.326

＃2-64

2.184

1.928

1.755

9 / 16-12

---

14.288

12.913

11.996

＃3-48

---

2.515

2.172

1.941

9 / 16-18

14.288

13.371

12.761

＃3-56

2.515

2.220

2.024

5 / 8-11

---

15.875

14.376

13.376

＃4-40

---

2.845

2.433

2.156

5 / 8-18

15.875

14.958

14.348

＃4-48

2.845

2.502

2.271

3 / 4-10

---

19.050

17.399

16.299

＃5-40

---

3.175

2.764

2.487

3 / 4-16

19.050

18.019

17.330

＃5-44

3.175

2.709

2.551

7 / 8-9

---

22.225

20.391

19.169

＃6-32

---

3.505

2.990

2.647

7 / 8-14

22.225

21.046

20.262

＃6-40

3.505

3.094

2.817

＃8-32

---

4.166

3.650

3.307

1-8

---

25.400

23.338

21.963

＃8-36

4.166

3.708

3.401

1-12

25.400

24.026

23.109

＃10-24

---

4.826

4.138

3.680

1 1 / 8-7

---

28.575

26.218

24.648

＃10-32

4.826

4.310

3.967

1 1 / 8-12

28.575

27.201

26.284

＃12-24

---

5.486

4.798

4.341

1 1 / 4-7

---

31.750

29.393

27.823

＃12-28

5.486

4.897

4.503

1 1 / 4-12

31.750

30.376

29.459

1 / 4-20

---

6.350

5.524

4.976

1 3 / 8-6

---

34.925

32.174

30.343

1 / 4-28

6.350

5.761

5.367

1 3 / 8-12

34.925

33.551

32.634

5 / 16-18

---

7.938

7.021

6.411

1 1 / 2-6

38.100

35.349

33.518

15 / 16-24

7.938

7.249

6.792

1 1 / 2-12

38.100

36.726

35.809