20
30
40
20.5
23.7-24.2
6.3
10
13.7
22×1.5
0.75d
1d
1.5d
16.5
22
33
22.4
26.3-26.8
8.6
11.7
18
24×1.5
0.75d
1d
1.5d
18
24
36
24.4
28.6-29.1
9.5
13
19.8
24×3
1d
1.5d
2d
24
36
48
24.6
28.6-29.1
8.2
9.85-10.1
6.1
9.5
13
8×1.25
1d
1.5d
2d
8
12
16
8.3
9.85-10.1
4.7
7.4
10.6
10×1
1d
1.5d
2d
10
15
20
10.2
12.1-12.5
7.6
12
16.3
10×1.5
1d
1.5d
2d
10
15
20
10.3
12.1-12.5
5
8
11.2
12×1.5
1d
1.5d
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
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
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
0.75d
1d
19.5
29.25
39
39.5
45.1-45.6
7.9
12.2
16.6
60×4
0.5d
1d
32
64
64.9
65-66
7.3
15.6
英制螺纹护套规格参数表
螺纹护套规格参数
螺纹规格d×p
k×d
螺纹护套安装后长度L(mm)
钻头直径do(mm)
螺纹护套自由状态下外径Dz(mm)
自由状态螺套圈数N(≈)
2d
12
18
24
12.4
14.4-14.8
6.2
9.8
13.5
12×1.75
1d
1.5d
2d
12
18
24
12.4
14.4-14.8
5.2
8.4
11.7
14×1.5
1d
1.5d
2d
14
21
28
14.4
17.2-17.7
7
11.2
15.3
16×1.5
1d
1.5d
2d
16
24
32
16.4
19.4-19.9
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
6.3
10
14
26×1.5
0.5d
0.75d
1d
13
19.5
26
26.4
30.5-31
6.7
10.7
14.6
27×1.5
0.5d
0.75d
1d
13.5
20.3
27
27.4
32.2-32.7
6.7
10.7
14.6
27×2
0.5d
0.75d
1d
13.5
20.3
27
27.5
32.2-32.7
6.7
10.7
8.3
13
17.7
16×2
1d
1.5d
2d
16
24
32
16.5
19.4-19.9
6.0
9.7
13.3
18×1.5
0.5d
1.0d
1.5d
9
18
27
18.4
21.5-22
4.4
9.5
15
20×1.5
0.75d
1d
1.5d
15
20
30
20.4
23.7-24.2
8
10.7
16.7
20×2.5
1d
1.5d
2d
1.5d
2d
9.5
1ห้องสมุดไป่ตู้.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
螺纹底孔对照表
符号说明：
d--螺纹护套公称直径（螺钉公称直径） L—螺纹护套公称长度（安装后的螺纹长度） P--螺距
do--钻丝套安装用钻头直径 Dz--螺纹护套自由状态下外径 N--螺纹护套自由状态下圈数
螺纹护套规格参数表
螺纹护套规格参数
螺纹规格d×p
k×d
螺纹护套安装后长度L(mm)
钻头直径do(mm)
14.6
30×1..5
0.5d
0.75d
1d
15
22.5
30
30.4
35.2-35.7
7.8
12.2
16.5
30×3.5
1d
1.5d
2d
30
45
60
30.7
35.2-35.7
7
11
14.9
33×1.5
0.5d
0.75d
1d
16.6
24.5
33
33.4
38.3-38.8
9.1
13.7
18.3
39×2
0.5d
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
1d
1.5d
25.4
38.1
30.0
29.69-30.45
10.0
15.6
2d
4
6
8
4.1
5.15-5.35
3.7