内六角圆柱头轴肩螺钉(GB/T 5281—1985)
内六角圆柱头轴肩螺钉(GB/T 5281—1985)
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内六角圆柱头轴肩螺钉(GB/T 5281—1985) mm |
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末端按GB2规定 |
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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/T 5281 10×40 |
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d 公称 |
ds |
螺距 P |
b |
dk |
dg1 min |
dg2 |
da1 max |
da2 max |
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公称 |
max |
min |
max |
min |
max (光滑头部) |
max (滚花头部) |
min |
max |
min |
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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 |
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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 |
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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 |
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M10 |
13 |
12.984 |
12.941 |
1.5 |
16.40 |
15.60 |
18 |
18.27 |
17.73 |
12.42 |
7.91 |
7.69 |
15.2 |
10 |
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M12 |
16 |
15.984 |
15.941 |
1.75 |
18.40 |
17.60 |
24 |
24.33 |
23.67 |
15.42 |
9.57 |
9.35 |
18.2 |
12 |
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M16 |
20 |
19.980 |
19.928 |
2 |
22.40 |
21.60 |
30 |
30.33 |
29.67 |
19.42 |
13.33 |
12.96 |
22.4 |
16 |
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M20 |
25 |
24.980 |
24.928 |
2.5 |
27.40 |
26.60 |
36 |
36.39 |
35.61 |
24.42 |
16.57 |
16.30 |
27.4 |
20 |
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d 公称 |
e min |
K |
g1 max |
g2 max |
r1 min |
r2 min |
s |
t min |
W min |
l的范围 |
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max |
min |
公称 |
max |
min |
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M5 |
3.44 |
4.5 |
4.32 |
2.5 |
2 |
0.25 |
0.5 |
3 |
3.08 |
3.02 |
2.4 |
1 |
10～40 |
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M6 |
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 |
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M8 |
5.72 |
7 |
6.78 |
2.5 |
3.1 |
0.6 |
0.64 |
5 |
5.095 |
5.02 |
4.2 |
1.6 |
16～120 |
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M10 |
6.86 |
9 |
8.78 |
2.5 |
3.7 |
0.6 |
0.77 |
6 |
6.095 |
6.02 |
4.9 |
1.8 |
16～120 |
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M12 |
9.15 |
11 |
10.73 |
2.5 |
4.4 |
0.6 |
0.87 |
8 |
8.115 |
8.025 |
6.6 |
2 |
30～120 |
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M16 |
11.43 |
14 |
13.73 |
2.5 |
5 |
0.8 |
1.14 |
10 |
10.115 |
10.025 |
8.8 |
3.2 |
40～120 |
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M20 |
13.72 |
16 |
15.73 |
3 |
6.3 |
0.8 |
1.38 |
12 |
12.142 |
12.032 |
10 |
3.25 |
50～120 |
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技术条件 |
材料 |
螺纹公差 |
机械性能等级 |
产品公差等级 |
表面处理 |
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钢 |
5g、6g |
12.9 |
A级 |
轴肩 |
表面粗糙度Ra＝0.8μm，仅适用于电镀前 |
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其他部位 |
1.氧化；2.镀锌钝化 |
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公称长度l的商品规格系列： mm |
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公称 |
10 |
12 |
16 |
20 |
25 |
30 |
40 |
50 |
60 |
70 |
80 |
90 |
100 |
120 |
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min |
10 |
12 |
16 |
20 |
25 |
30 |
40 |
50 |
60 |
70 |
80 |
90 |
100 |
120 |
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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 |
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形位公差 |
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同轴度与垂直度公差 mm |
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同轴度公差 |
垂直度公差 |
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T1 |
T2 |
T3 |
X |
Y |
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基本尺寸dK |
公差值 |
基本尺寸ds |
公差值 |
基本尺寸d |
公差值 |
基本尺寸ds |
公差值 |
基本尺寸d |
公差值 |
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10 |
0.44 |
6.5 |
0.44 |
5 |
0.12 |
6.5 |
0.15 |
5 |
0.15 |
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13 |
0.54 |
8 |
6 |
8 |
0.18 |
6 |
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16 |
10 |
8 |
10 |
0.24 |
8 |
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18 |
13 |
0.54 |
10 |
13 |
0.31 |
10 |
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24 |
0.66 |
16 |
12 |
0.14 |
16 |
0.34 |
12 |
0.20 |
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30 |
20 |
0.66 |
16 |
20 |
0.42 |
16 |
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36 |
0.78 |
25 |
20 |
0.17 |
25 |
0.50 |
20 |
0.30 |
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直线度公差 mm |
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基本尺寸 ds |
公差值 Z |
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≤8 |
0.002l＋0.05 |
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＞8 |
0.0025l＋0.05 |
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质量 kg |
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轴肩直径ds |
6.5 |
8 |
10 |
13 |
16 |
20 |
25 |
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公称长度/mm |
每1000件钢制品的质量 ≈ |
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10 |
6.09 |
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12 |
6.60 |
11.48 |
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16 |
7.64 |
13.05 |
23.35 |
39.97 |
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20 |
8.68 |
14.62 |
25.80 |
44.11 |
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25 |
9.97 |
16.58 |
28.86 |
49.28 |
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30 |
11.26 |
18.54 |
31.92 |
54.46 |
93.62 |
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40 |
13.85 |
22.46 |
38.05 |
64.81 |
109.3 |
194.5 |
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50 |
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26.38 |
44.18 |
75.17 |
125.0 |
219.0 |
358.6 |
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60 |
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50.30 |
85.52 |
140.7 |
243.5 |
396.9 |
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70 |
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56.43 |
95.87 |
156.4 |
268.0 |
435.2 |
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80 |
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|
62.55 |
106.2 |
172.0 |
292.5 |
473.4 |
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90 |
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|
68.68 |
116.6 |
187.7 |
317.0 |
511.7 |
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100 |
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|
74.81 |
126.9 |
203.4 |
341.5 |
550.0 |
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120 |
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|
87.06 |
147.6 |
234.8 |
390.5 |
626.6 |
