开槽球面圆柱头轴位螺钉 (摘自GB 946-88)
螺纹规格为M1.6~10的球面圆柱头轴位螺钉。
标记示例:
螺纹规格d=M5、公称长度l=10mm、性能等级为4.8级、不经表面处理的开槽球面圆柱头轴位螺钉的标记:
螺钉 GB 946 M5×10
d1按f9制造时应加标记f9:
螺钉 GB 946 M5 f9×10
螺纹规格为M1.6~10的球面圆柱头轴位螺钉:
螺纹规格
d
|
d1
|
dk
|
K
|
n
|
t
min
|
r
min
|
r1 ≤
|
d2
|
a≈
|
R≈
|
b
|
l
|
max
|
min
|
max
|
min
|
max
|
min
|
公称
|
min
|
max
|
M1.6
|
2.48
|
2.42
|
3.5
|
3.2
|
1.2
|
1.06
|
0.4
|
0.46
|
0.6
|
0.6
|
0.2
|
0.3
|
1.1
|
1
|
3.5
|
2.5
|
1~6
|
M2
|
2.98
|
2.92
|
4
|
3.7
|
1.6
|
1.46
|
0.5
|
0.56
|
0.7
|
0.7
|
0.2
|
0.3
|
1.4
|
1
|
4
|
3
|
1~8
|
M2.5
|
3.47
|
3.395
|
5
|
4.7
|
1.8
|
1.66
|
0.6
|
0.66
|
0.8
|
0.9
|
0.2
|
0.3
|
1.8
|
1
|
5
|
3.5
|
1~8
|
M3
|
3.97
|
3.895
|
6
|
5.7
|
2
|
1.86
|
0.8
|
0.86
|
1
|
1
|
0.2
|
0.3
|
2.2
|
1
|
6
|
4
|
1~10
|
M4
|
4.97
|
4.895
|
8
|
7.64
|
2.8
|
2.66
|
1.2
|
1.26
|
1.51
|
1.4
|
0.4
|
0.5
|
3
|
1.5
|
8
|
5
|
1~10
|
M5
|
5.97
|
5.895
|
10
|
9.64
|
3.5
|
3.32
|
1.2
|
1.26
|
1.51
|
1.7
|
0.4
|
0.5
|
3.8
|
1.5
|
10
|
6
|
1~12
|
M6
|
7.96
|
7.87
|
12
|
11.57
|
4
|
3.82
|
1.6
|
1.66
|
1.91
|
2
|
0.4
|
0.5
|
4.5
|
2
|
12
|
8
|
1~14
|
M8
|
9.96
|
9.87
|
15
|
14.57
|
5
|
4.82
|
2
|
2.06
|
2.31
|
2.5
|
0.4
|
0.5
|
6.2
|
2
|
15
|
10
|
2~16
|
M10
|
11.95
|
11.84
|
20
|
19.48
|
6
|
5.82
|
2.5
|
2.56
|
2.81
|
3
|
0.5
|
1
|
7.8
|
3
|
20
|
12
|
2~20
|
l的范围:
公称
|
1
|
1.2
|
1.6
|
2
|
2.5
|
3
|
4
|
5
|
6
|
8
|
10
|
12
|
(14)
|
16
|
20
|
min
|
0.80
|
1.00
|
1.40
|
1.80
|
2.30
|
2.80
|
3.76
|
4.76
|
5.76
|
7.71
|
9.71
|
11.65
|
13.65
|
15.65
|
19.58
|
max
|
1.20
|
1.40
|
1.80
|
2.20
|
2.70
|
3.20
|
4.24
|
5.24
|
6.24
|
8.29
|
10.29
|
12.35
|
14.35
|
16.35
|
20.42
|
l公称+b
|
基本尺寸
|
>3~6
|
>6~10
|
>10~18
|
>18~30
|
>30
|
极限偏差
|
±0.24
|
±0.29
|
±0.35
|
±0.42
|
±0.50
|