方头长圆柱球面端紧定螺钉 (摘自GB 83-88)
螺纹规格为M8~M20的方头长圆柱球面端紧定螺钉。
标记示例:
螺纹规格d=M10、公称长度l=30mm、性能等级为33H级、表面氧化的方头长圆柱球面端紧定螺钉的标记:
螺钉 GB 83 M10×30
螺纹规格为M8~M20的方头长圆柱球面端紧定螺钉:
螺纹规格
d
|
dp
|
e
|
K
|
c≈
|
r
|
z
|
re≈
|
S
|
l
|
max
|
min
|
min
|
公称
|
min
|
max
|
min
|
max
|
min
|
公称
|
min
|
max
|
M8
|
5.5
|
5.2
|
9.7
|
9
|
8.82
|
9.18
|
2
|
0.4
|
4.3
|
4
|
7.7
|
8
|
7.78
|
8
|
16~40
|
M10
|
7
|
6.64
|
12.2
|
11
|
10.78
|
11.22
|
3
|
0.5
|
5.3
|
5
|
9.8
|
10
|
9.78
|
10
|
20~50
|
M12
|
8.5
|
8.14
|
14.7
|
13
|
12.78
|
13.22
|
3
|
0.6
|
6.3
|
6
|
11.9
|
12
|
11.73
|
12
|
25~60
|
M16
|
12
|
11.57
|
20.9
|
18
|
17.78
|
18.22
|
4
|
0.6
|
8.36
|
8
|
16.8
|
17
|
16.73
|
17
|
30~80
|
M20
|
15
|
14.57
|
27.1
|
23
|
22.58
|
23.42
|
5
|
0.8
|
10.36
|
10
|
21
|
22
|
21.67
|
22
|
35~100
|
l的范围:
公称
|
16
|
20
|
25
|
30
|
35
|
40
|
45
|
50
|
(55)
|
60
|
70
|
80
|
90
|
100
|
min
|
15.65
|
19.58
|
24.58
|
29.58
|
34.5
|
39.5
|
44.5
|
49.5
|
54.05
|
59.05
|
69.05
|
79.05
|
88.9
|
98.9
|
max
|
16.35
|
20.42
|
25.42
|
30.42
|
35.5
|
40.5
|
45.5
|
50.5
|
55.95
|
60.95
|
70.95
|
80.95
|
91.10
|
101.10
|