半圆头方颈螺栓(GB/T 12—2013)
半圆头方颈螺栓(GB/T 12—2013)
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半圆头方颈螺栓(GB/T 12—2013) mm |
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螺纹末端按GB/T 2规定；无螺纹部分杆径约等于螺纹中径或螺纹大径 |
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标记示例： 螺纹规格d＝M10、公称长度l＝70mm、性能等级为4.8级、不经表面处理的半圆头方颈螺栓的标记： 螺栓 GB/T 12 M10×70 |
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螺纹规格 d |
b |
dk |
K1 |
K |
Ss |
r min |
R |
X max |
l的范围 |
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l≤125 |
125＜l≤200 |
max |
min |
max |
min |
max |
min |
max |
min |
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M6 |
18 |
— |
13.1 |
11.3 |
4.4 |
3.6 |
4.08 |
3.2 |
6.3 |
5.84 |
0.5 |
7 |
2.5 |
16～60 |
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M8 |
22 |
28 |
17.1 |
15.3 |
5.4 |
4.6 |
5.28 |
4.4 |
8.36 |
7.8 |
0.5 |
9 |
3.2 |
16～80 |
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M10 |
26 |
32 |
21.3 |
19.16 |
6.4 |
5.6 |
6.48 |
5.6 |
10.36 |
9.8 |
0.5 |
11 |
3.8 |
25～100 |
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M12 |
30 |
36 |
25.3 |
23.16 |
8.45 |
7.55 |
8.9 |
7.55 |
12.43 |
11.76 |
0.8 |
13 |
4.3 |
30～120 |
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(M14) |
34 |
40 |
29.3 |
27.16 |
9.45 |
8.55 |
9.9 |
8.55 |
14.43 |
13.76 |
0.8 |
15 |
5 |
40～140 |
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M16 |
38 |
44 |
33.6 |
31 |
10.45 |
9.55 |
10.9 |
9.55 |
16.43 |
15.76 |
1 |
18 |
5 |
45～160 |
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M20 |
46 |
52 |
41.6 |
39 |
12.55 |
11.45 |
13.1 |
11.45 |
20.52 |
19.22 |
1 |
22 |
6.3 |
60～200 |
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技术条件 |
材料 |
螺纹公差 |
机械性能等级 |
产品等级 |
表面处理 |
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钢 |
8g |
3.6、4.6、4.8 |
C级 |
1．不经处理；2．氧化；3．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 |
16 |
20 |
25 |
30 |
35 |
40 |
45 |
50 |
(55) |
60 |
(65) |
70 |
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min |
15.1 |
18.95 |
23.95 |
28.95 |
33.75 |
38.75 |
43.75 |
48.75 |
53.5 |
58.5 |
63.5 |
68.5 |
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max |
16.9 |
21.05 |
26.05 |
31.05 |
36.25 |
41.25 |
46.25 |
51.25 |
56.5 |
61.5 |
66.5 |
71.5 |
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公称 |
80 |
90 |
100 |
110 |
120 |
130 |
140 |
150 |
160 |
180 |
200 |
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min |
78.5 |
88.25 |
98.25 |
108.25 |
118.25 |
128 |
138 |
148 |
156 |
176 |
195.4 |
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max |
81.5 |
91.75 |
101.75 |
111.75 |
121.75 |
132 |
142 |
152 |
164 |
184 |
204.6 |
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注：1．尽可能不采用括号内的规格。 2．长度l不能满足表中规定的螺纹长度时，应制成全螺纹。 |
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质量 kg |
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螺纹规格 |
M6 |
M8 |
M10 |
M12 |
M14 |
M16 |
M20 |
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公称长度/mm |
每1000件钢制品的质量≈ |
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16 |
4.57 |
9.30 |
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20 |
5.26 |
10.55 |
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25 |
6.12 |
12.10 |
20.74 |
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30 |
6.97 |
13.66 |
23.20 |
38.78 |
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35 |
7.83 |
15.21 |
25.65 |
42.34 |
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40 |
8.69 |
16.77 |
28.11 |
45.91 |
65.05 |
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45 |
9.54 |
18.32 |
30.57 |
49.47 |
69.93 |
98.0 |
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50 |
10.40 |
19.88 |
33.02 |
53.03 |
74.80 |
104.5 |
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55 |
11.26 |
21.43 |
35.48 |
56.59 |
79.68 |
111.1 |
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60 |
12.12 |
22.99 |
37.93 |
60.15 |
84.55 |
117.6 |
190.8 |
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65 |
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24.54 |
40.39 |
63.72 |
89.42 |
124.2 |
201.1 |
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70 |
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26.10 |
42.84 |
67.28 |
94.30 |
130.7 |
211.3 |
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80 |
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29.21 |
47.76 |
74.40 |
104.1 |
143.8 |
231.8 |
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90 |
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52.67 |
81.53 |
113.8 |
156.9 |
252.3 |
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100 |
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57.58 |
88.65 |
123.6 |
170.0 |
272.7 |
|
110 |
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95.78 |
133.3 |
183.1 |
293.2 |
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120 |
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102.9 |
143.0 |
196.1 |
313.7 |
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130 |
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152.8 |
209.2 |
334.2 |
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140 |
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162.5 |
222.3 |
354.7 |
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150 |
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235.4 |
375.1 |
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160 |
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248.5 |
395.6 |
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180 |
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436.6 |
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200 |
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477.5 |
