UNC英制螺纹不锈钢螺丝套标准规格

直径号--牙数

安装后的长度

安装后的长度

do(mm)

钻头直径

安装前圈数

4-40

1d
1.5d
2d

2.9
4.3
5.8

3

3.66-4.04

3.2
5.1
7.2

5-40

1d
1.5d
2d

3.2
4.8
6.4

3.4

4.01-4.39

3.7
5.9
8.2

6-32

1d
1.5d
2d

3.5
5.3
7.0

3.7

4.52-4.90

2.8
4.8
6.8

8-32

1d
1.5d
2d

4.2
6.25
8.3

4.4

5.20-5.56

4.0
6.0
8.7

10-24

1d
1.5d
2d

4.8
7.2
9.6

5.1

6.19-6.58

3.3
5.4
7.5

12-24

1d
1.5d
2d

5.5
8.2
11.0

5.8

6.86-7.24

4.0
6.3
8.8

1/4"-20

1d
1.5d
2d

6.4
9.5
12.7

6.7

7.86-8.38

3.9
6.2
8.6

3/8"-16

1d
1.5d
2d

9.5
14.3
19.1

9.9

11.48-11.99

4.8
7.7
10.6

7/16"-14

1d
1.5d
2d

11.1
16.7
22.2

11.6

13.36-13.99

4.9
7.9
10.7

1/2"-13

1d
1.5d
2d

12.7
19.1
25.4

13.1

15.16-15.8

5.2
8.3
11.4

5/8"-11

1d
1.5d
2d

15.9
23.8
31.8

16.4

18.84-19.48

5.7
9.0
12.3

3/4"-10

1d
1.5d
2d

19.1
28.6
38.1

19.6

22.36-23.00

6.3
9.9
13.5

1"-8

1d
1.5d
2d

25.4
38.1
50.8

26.1

29.62-30.38

6.8
10.6
15.4

8-36

1d
1.5d
2d

4.2
6.3
8.3

4.3

5.18-5.68

4.5
7.2
9.7

10-32

1d
1.5d
2d

4.83
7.24
9.6

5.0

5.99-6.50

4.1
6.9
10

1/4"-28

1d
1.5d
2d

6.35
9.5
12.7

6.6

7.77-8.28

5.0
8.6
11.8

5/16"-24

1d
1.5d
2d

7.9
11.9
15.9

8.2

9.65-10.16

5.9
9.4
12.8

3/8"-24

1d
1.5d
2d

9.5
14.3
19.1

9.8

11.37-11.88

7.3
11.5
15.6

7/16"-20

1d
1.5d
2d

11.1
16.7
22.2

11.4

13.3-13.7

7.0
11.1
15.0

1/2"-20

1d
1.5d
2d

12.7
19.1
25.4

13.0

15.03-15.67

7.9
12.8
17.3

9/16"-18

1d
1.5d
2d

14.3
21.5
28.6

14.6

16.91-17.55

7.9
12.0
16.0

5/8"-18

1d
1.5d
2d

15.9
23.8
31.8

16.2

18.61-19.25

9.4
14.5
19.7

3/4"-16

1d
1.5d
2d

19.1
28.6
31.8

19.4

22.25-22.88

10.1
15.6
21.0

7/8"-14

1d
1.5d
2d

22.2
33.3
44.5

22.6

25.93-26.69

10.3
15.9
21.6

1"-14

1d
1.5d
2d

25.4
38.1
50.8

25.9

29.69-30.45

11.8
18.1
24.5

1"-12

1d
1.5d

25.4
38.1

30.0

29.69-30.45

10.0
15.6