方头短圆柱锥端紧定螺钉 (摘自GB 86-88)
螺纹规格为M5~M20的方头短圆柱锥端紧定螺钉。
标记示例:
螺纹规格d=M10、公称长度l=30mm、性能等级为33H、表面氧化的方头短圆柱锥端紧螺钉的标 记:
螺钉 GB 86 M10×30
螺纹规格为M5~M20的方头短圆,锥端紧定螺钉:
螺纹规格
d
|
dp
|
e
|
K
|
r
|
z
|
S
|
l
|
max
|
min
|
min
|
公称
|
min
|
max
|
min
|
max
|
min
|
公称
|
min
|
max
|
M5
|
3.5
|
3.2
|
6
|
5
|
4.85
|
5.15
|
0.2
|
3.8
|
3.5
|
5
|
4.82
|
5
|
12~30
|
M6
|
4
|
3.7
|
7.3
|
6
|
5.85
|
6.15
|
0.25
|
4.3
|
4
|
6
|
5.82
|
6
|
12~30
|
M8
|
5.5
|
5.2
|
9.7
|
7
|
6.82
|
7.18
|
0.4
|
5.3
|
5
|
8
|
7.78
|
8
|
14~40
|
M10
|
7
|
6.64
|
12.2
|
8
|
7.82
|
8.18
|
0.4
|
6.3
|
6
|
10
|
9.78
|
10
|
20~50
|
M12
|
8.5
|
8.14
|
14.7
|
10
|
9.82
|
10.18
|
0.6
|
7.36
|
7
|
12
|
11.73
|
12
|
25~60
|
M16
|
12
|
11.57
|
20.9
|
14
|
13.785
|
14.215
|
0.6
|
9.36
|
9
|
17
|
16.73
|
17
|
25~80
|
M20
|
15
|
14.57
|
27.1
|
18
|
17.785
|
18.215
|
0.8
|
11.43
|
11
|
22
|
21.67
|
22
|
40~100
|
l的范围:
公称
|
12
|
(14)
|
16
|
20
|
25
|
30
|
35
|
40
|
45
|
50
|
(55)
|
60
|
70
|
80
|
90
|
100
|
min
|
11.65
|
13.65
|
15.65
|
19.58
|
24.58
|
29.58
|
34.50
|
39.50
|
44.50
|
49.50
|
54.05
|
59.05
|
69.05
|
79.05
|
88.90
|
98.90
|
max
|
12.35
|
14.35
|
16.35
|
20.42
|
25.42
|
30.42
|
35.50
|
40.50
|
45.50
|
50.50
|
55.95
|
60.95
|
70.95
|
80.95
|
91.10
|
101.10
|