内六角圆柱头轴肩螺钉 (摘自GB 5281-85)
轴肩公称尺寸为6.5~25mm(螺纹规格为M5~M20)的内六角圆柱头轴肩螺钉。
标记示例:
轴肩直径ds=10mm(螺纹规格d=M8)、公称长度l=40mm、表面氧化的内六角圆柱头轴肩螺钉的标记:
螺钉 GB 5281 10×40
轴肩公称尺寸为6.5~25mm(螺纹规格为M5~M20)的内六角圆柱头轴肩螺钉:
公称
d
|
ds
|
P
|
b
|
dk
|
dg1
min
|
dg2
|
da1
max
|
da2
max
|
e
|
K
|
g1
max
|
g2
max
|
r1
min
|
r2
min
|
s
|
t
min
|
W
min
|
l
|
公称
|
max
|
min
|
max
|
min
|
max*
|
max* *
|
min
|
max
|
min
|
max
|
min
|
公称
|
max
|
min
|
M5
|
6.5
|
6.487
|
6.451
|
0.8
|
9.75
|
9.25
|
10
|
10.22
|
9.78
|
5.92
|
3.86
|
3.68
|
7.5
|
5
|
3.44
|
4.5
|
4.32
|
2.5
|
2
|
0.25
|
0.5
|
3
|
3.08
|
3.02
|
2.4
|
1
|
10~40
|
M6
|
8
|
7.987
|
7.951
|
1
|
11.25
|
10.75
|
13
|
13.27
|
12.73
|
7.42
|
4.58
|
4.40
|
9.2
|
6
|
4.58
|
5.5
|
5.32
|
2.5
|
2.5
|
0.4
|
0.53
|
4
|
4.095
|
4.02
|
3.3
|
1.15
|
12~50
|
M8
|
10
|
9.987
|
9.951
|
1.25
|
13.25
|
12.75
|
16
|
16.27
|
15.73
|
9.42
|
6.25
|
6.03
|
11.2
|
8
|
5.72
|
7
|
6.78
|
2.5
|
3.1
|
0.6
|
0.64
|
5
|
5.095
|
5.02
|
4.2
|
1.6
|
16~120
|
M10
|
13
|
12.984
|
12.941
|
1.5
|
16.4
|
15.60
|
18
|
18.27
|
17.73
|
12.42
|
7.91
|
7.69
|
15.2
|
10
|
6.86
|
9
|
8.78
|
2.5
|
3.7
|
0.6
|
0.77
|
6
|
6.095
|
6.02
|
4.9
|
1.8
|
16~120
|
M12
|
16
|
15.984
|
15.941
|
1.75
|
18.4
|
17.60
|
24
|
24.33
|
23.67
|
15.42
|
9.57
|
9.35
|
18.2
|
12
|
9.15
|
11
|
10.73
|
2.5
|
4.4
|
0.6
|
0.87
|
8
|
8.115
|
8.025
|
6.6
|
2
|
30~120
|
M16
|
20
|
19.980
|
19.928
|
2
|
22.4
|
21.60
|
30
|
30.33
|
29.67
|
19.42
|
13.33
|
12.96
|
22.4
|
16
|
11.43
|
14
|
13.73
|
2.5
|
5
|
0.8
|
1.14
|
10
|
10.115
|
10.025
|
8.8
|
3.2
|
40~120
|
M20
|
25
|
24.980
|
24.928
|
2.5
|
27.4
|
26.60
|
36
|
36.39
|
35.61
|
24.42
|
16.57
|
16.30
|
27.4
|
20
|
13.72
|
16
|
15.73
|
3
|
6.3
|
0.8
|
1.38
|
12
|
12.142
|
12.032
|
10
|
3.25
|
50~120
|
注:1)P—螺距。
2)* 光滑头部。
3)* * 滚花头部。
l的范围:
公称
|
10
|
12
|
16
|
20
|
25
|
30
|
40
|
50
|
60
|
70
|
80
|
90
|
100
|
120
|
min
|
10
|
12
|
16
|
20
|
25
|
30
|
40
|
50
|
60
|
70
|
80
|
90
|
100
|
120
|
max
|
10.25
|
12.25
|
16.25
|
20.25
|
25.25
|
30.25
|
40.25
|
50.25
|
60.25
|
70.25
|
80.25
|
90.25
|
100.25
|
120.25
|