鋼絲螺套的主要特點是增加基體螺孔強度或修復損壞的螺孔。鋼絲螺套旋入特定的內螺紋后,所形成的新的螺孔基本牙型應符合GB192-81《普通螺紋基本牙型》的規定。螺紋各部尺寸應符合GB196-81《普通螺紋基本尺寸》的規定,螺紋的精度根據需要應為5H、6H或7H。
鋼絲螺套螺孔的深度根據需要選定。
1、鋼絲螺套旋入螺孔后,上端頭應低于螺孔端面0.25-0.5個螺距。
2、鋼絲螺套旋入螺孔后可用相應精度的螺紋塞規檢查其精度是否符合規定或用螺釘試裝。
3、螺紋塞規的通端或螺釘應能順利的通過鋼絲螺套的全長。
4、不得用絲錐校整已裝有鋼絲螺套的螺孔(即不得回絲)。
鋼絲螺套鉆孔和攻絲技術參數見下表:
公制鋼絲螺套鉆孔攻絲技術參數(依據 DIN 8140)
|
公制螺紋
|
1.0D
|
1.5D
|
2.0D
|
2.5D
|
3.0D
|
L
|
*小
鉆孔深度
|
攻絲
深度
|
L
|
*小
鉆孔深度
|
攻絲
深度
|
L
|
*小
鉆孔深度
|
攻絲
深度
|
L
|
*小
鉆孔深度
|
攻絲
深度
|
L
|
*小
鉆孔深度
|
攻絲
深度
|
M2×0.4
|
2.00
|
3.80
|
3.40
|
3.00
|
4.80
|
4.40
|
4.00
|
5.80
|
5.40
|
5.00
|
6.80
|
6.40
|
6.00
|
7.80
|
7.40
|
M2.5×0.45
|
2.50
|
4.52
|
4.07
|
3.75
|
5.78
|
5.33
|
5.00
|
7.03
|
6.58
|
6.25
|
8.28
|
7.83
|
7.50
|
9.53
|
9.08
|
M3×0.5
|
3.00
|
5.25
|
4.75
|
4.50
|
6.75
|
6.25
|
6.00
|
8.25
|
7.75
|
7.50
|
9.75
|
9.25
|
9.00
|
11.25
|
10.75
|
M3.5×0.6
|
3.50
|
6.20
|
5.60
|
5.25
|
7.95
|
7.35
|
7.00
|
9.70
|
9.10
|
8.75
|
11.45
|
10.85
|
10.50
|
13.20
|
12.60
|
M4×0.7
|
4.00
|
7.15
|
6.45
|
6.00
|
9.15
|
8.45
|
8.00
|
11.15
|
10.45
|
10.00
|
13.15
|
12.45
|
12.00
|
15.15
|
14.45
|
M5×0.8
|
5.00
|
8.60
|
7.80
|
7.50
|
11.10
|
10.30
|
10.00
|
13.60
|
12.80
|
12.50
|
16.10
|
15.30
|
15.00
|
18.60
|
17.80
|
M6×1.0
|
6.00
|
10.50
|
9.50
|
9.00
|
13.50
|
12.50
|
12.00
|
16.50
|
15.50
|
15.00
|
19.50
|
18.50
|
18.00
|
22.50
|
21.50
|
M7×1.0
|
7.00
|
11.50
|
10.50
|
10.50
|
15.00
|
14.00
|
14.00
|
18.50
|
17.50
|
17.50
|
22.00
|
21.00
|
21.00
|
25.50
|
24.50
|
M8×1.0
|
8.00
|
12.50
|
11.50
|
12.00
|
16.50
|
15.50
|
16.00
|
20.50
|
19.50
|
20.00
|
24.50
|
23.50
|
24.00
|
28.50
|
27.50
|
M8×1.25
|
8.00
|
13.63
|
12.38
|
12.00
|
17.63
|
16.38
|
16.00
|
21.63
|
20.38
|
20.00
|
25.63
|
24.38
|
24.00
|
29.63
|
28.38
|
M9×1.0
|
9.00
|
13.50
|
12.50
|
13.50
|
18.00
|
17.00
|
18.00
|
22.50
|
21.50
|
22.50
|
27.00
|
26.00
|
27.00
|
31.50
|
30.50
|
M9×1.25
|
9.00
|
14.63
|
13.38
|
13.50
|
19.13
|
17.88
|
18.00
|
23.63
|
22.38
|
22.50
|
28.13
|
26.88
|
27.00
|
32.63
|
31.38
|
M10×1.0
|
10.00
|
14.50
|
13.50
|
15.00
|
19.50
|
18.50
|
20.00
|
24.50
|
23.50
|
25.00
|
29.50
|
28.50
|
30.00
|
34.50
|
33.50
|
M10×1.25
|
10.00
|
15.63
|
14.38
|
15.00
|
20.63
|
19.38
|
20.00
|
25.63
|
24.38
|
25.00
|
30.63
|
29.38
|
30.00
|
35.63
|
34.38
|
M10×1.5
|
10.00
|
16.75
|
15.25
|
15.00
|
21.75
|
20.25
|
20.00
|
26.75
|
25.25
|
25.00
|
31.75
|
30.25
|
30.00
|
36.75
|
35.25
|
M11×1.5
|
11.00
|
17.75
|
16.25
|
16.50
|
23.25
|
21.75
|
22.00
|
28.75
|
27.25
|
27.50
|
34.25
|
32.75
|
33.00
|
39.75
|
38.25
|
M12×1.25
|
12.00
|
17.63
|
16.38
|
18.00
|
23.63
|
22.38
|
24.00
|
29.63
|
27.38
|
30.00
|
35.63
|
34.38
|
36.00
|
41.63
|
40.38
|
M12×1.5
|
12.00
|
18.75
|
17.25
|
18.00
|
24.00
|
23.25
|
24.00
|
30.75
|
29.25
|
30.00
|
36.75
|
35.25
|
36.00
|
42.75
|
41.25
|
M12×1.75
|
12.00
|
19.88
|
18.13
|
18.00
|
25.88
|
24.13
|
24.00
|
31.88
|
30.13
|
30.00
|
37.88
|
36.13
|
36.00
|
43.88
|
42.13
|
M14×1.25
|
14.00
|
19.62
|
18.37
|
21.00
|
26.62
|
25.37
|
28.00
|
33.62
|
32.37
|
35.00
|
40.62
|
39.37
|
42.00
|
47.62
|
46.37
|
M14×1.5
|
14.00
|
20.75
|
19.25
|
21.00
|
27.75
|
26.25
|
28.00
|
34.75
|
33.25
|
35.00
|
41.75
|
40.25
|
42.00
|
48.75
|
47.25
|
M14×2.0
|
14.00
|
23.00
|
21.00
|
21.00
|
30.00
|
28.00
|
28.00
|
37.00
|
35.00
|
35.00
|
44.00
|
42.00
|
42.00
|
51.00
|
49.00
|
M16×1.5
|
16.00
|
22.75
|
21.25
|
24.00
|
30.75
|
29.25
|
32.00
|
38.75
|
37.25
|
40.00
|
46.75
|
45.25
|
48.00
|
54.75
|
53.25
|
M16×2.0
|
16.00
|
25.00
|
23.00
|
24.00
|
33.00
|
31.00
|
32.00
|
41.00
|
39.00
|
40.00
|
49.00
|
47.00
|
48.00
|
57.00
|
55.00
|
M18×1.5
|
18.00
|
24.75
|
23.25
|
27.00
|
33.75
|
32.25
|
36.00
|
42.75
|
41.25
|
45.00
|
51.75
|
50.25
|
54.00
|
60.75
|
59.25
|
M18×2.0
|
18.00
|
27.00
|
25.00
|
27.00
|
36.00
|
34.00
|
36.00
|
45.00
|
43.00
|
45.00
|
54.00
|
52.00
|
54.00
|
63.00
|
61.00
|
M18×2.5
|
18.00
|
29.25
|
26.75
|
27.00
|
38.25
|
35.75
|
36.00
|
47.25
|
44.75
|
45.00
|
56.25
|
53.75
|
54.00
|
65.25
|
62.75
|
M20×1.5
|
20.00
|
26.75
|
25.25
|
30.00
|
36.75
|
35.25
|
40.00
|
46.75
|
45.25
|
50.00
|
56.75
|
55.25
|
60.00
|
66.75
|
65.25
|
M20×2.0
|
20.00
|
29.00
|
27.00
|
30.00
|
39.00
|
37.00
|
40.00
|
49.00
|
47.00
|
50.00
|
59.00
|
57.00
|
60.00
|
69.00
|
67.00
|
M20×2.5
|
20.00
|
31.25
|
28.75
|
30.00
|
41.25
|
38.75
|
40.00
|
51.25
|
48.75
|
50.00
|
61.25
|
58.75
|
60.00
|
71.25
|
68.75
|
M22×1.5
|
22.00
|
28.75
|
27.25
|
33.00
|
39.75
|
38.25
|
44.00
|
50.75
|
49.25
|
55.00
|
61.75
|
60.25
|
66.00
|
72.75
|
71.25
|
M22×2.0
|
22.00
|
31.00
|
29.00
|
33.00
|
42.00
|
40.00
|
44.00
|
53.00
|
51.00
|
55.00
|
64.00
|
62.00
|
66.00
|
75.00
|
73.00
|
M22×2.5
|
22.00
|
33.25
|
30.75
|
33.00
|
44.25
|
41.75
|
44.00
|
55.25
|
52.75
|
55.00
|
66.25
|
63.75
|
66.00
|
77.25
|
74.75
|
M24×2.0
|
24.00
|
33.00
|
31.00
|
36.00
|
45.00
|
43.00
|
48.00
|
57.00
|
55.00
|
60.00
|
69.00
|
67.00
|
72.00
|
81.00
|
79.00
|
M24×3.0
|
24.00
|
37.50
|
34.50
|
36.00
|
49.50
|
46.50
|
48.00
|
61.50
|
58.50
|
60.00
|
73.50
|
70.50
|
72.00
|
85.50
|
82.50
|
M27×2.0
|
27.00
|
36.00
|
34.00
|
40.50
|
49.50
|
47.50
|
54.00
|
63.00
|
61.00
|
67.50
|
76.50
|
74.50
|
81.00
|
90.00
|
88.00
|
M27×3.0
|
27.00
|
40.50
|
37.50
|
40.50
|
54.00
|
51.00
|
54.00
|
67.50
|
64.50
|
67.50
|
81.00
|
78.00
|
81.00
|
94.50
|
91.50
|
M30×3.0
|
30.00
|
43.50
|
40.50
|
45.00
|
58.50
|
55.50
|
60.00
|
73.50
|
70.50
|
75.00
|
88.50
|
85.50
|
90.00
|
103.50
|
100.50
|
M30×3.5
|
30.00
|
45.75
|
42.25
|
45.00
|
60.75
|
57.25
|
60.00
|
75.75
|
72.25
|
75.00
|
90.75
|
87.25
|
90.00
|
105.75
|
102.25
|
M33×3.5
|
33.00
|
48.75
|
45.25
|
49.50
|
65.25
|
61.75
|
66.00
|
81.75
|
78.25
|
82.50
|
98.25
|
94.75
|
99.00
|
114.75
|
111.25
|
M36×3.0
|
36.00
|
49.50
|
46.50
|
54.00
|
67.50
|
64.50
|
72.00
|
85.50
|
82.50
|
90.00
|
103.50
|
100.50
|
108.00
|
121.50
|
118.50
|
M36×4.0
|
36.00
|
54.00
|
50.00
|
54.00
|
72.00
|
68.00
|
72.00
|
90.00
|
86.00
|
90.00
|
108.00
|
104.00
|
108.00
|
126.00
|
122.00
|
M39×4.0
|
39.00
|
57.00
|
53.00
|
58.50
|
76.50
|
72.50
|
78.00
|
96.00
|
92.00
|
97.50
|
115.50
|
111.50
|
117.00
|
135.00
|
131.00
|
M42×3.0
|
42.00
|
55.50
|
52.50
|
63.00
|
76.50
|
73.50
|
84.00
|
97.50
|
94.50
|
105.00
|
118.50
|
115.50
|
126.00
|
139.50
|
136.50
|
M42×4.5
|
42.00
|
62.25
|
57.75
|
63.00
|
83.25
|
78.75
|
84.00
|
104.25
|
99.75
|
105.00
|
125.25
|
120.75
|
126.00
|
146.25
|
141.75
|

P—螺紋套安裝低于工件表面1/4-1/2螺距
|
L—螺紋套安裝后有效長度
|
B—攻絲深度,包括絲錐倒角處深度
|
D—*小鉆孔深度
|