方头螺栓 C级(GB/T 8—2021)
方头螺栓 C级(GB/T 8—2021)
|
方头螺栓 C级(GB/T 8—2021) mm |
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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|
|
螺纹规格 d |
M10 |
M12 |
(M14) |
M16 |
(M18) |
M20 |
(M22) |
M24 |
(M27) |
M30 |
M36 |
M42 |
M48 |
|
P 螺距 |
1.50 |
1.75 |
2.0 |
2.0 |
2.5 |
2.5 |
2.5 |
3 |
3 |
3.5 |
4 |
4.5 |
5 |
|
e 最小值 |
20.24 |
22.84 |
26.21 |
30.11 |
34.01 |
37.91 |
42.9 |
45.5 |
52.0 |
58.5 |
69.94 |
82.03 |
95.03 |
|
k 公称 |
7 |
8 |
9 |
10 |
12 |
13 |
14 |
15 |
17 |
19 |
23 |
26 |
30 |
|
k 最大值 |
7.45 |
8.45 |
9.45 |
10.75 |
12.90 |
13.90 |
14.90 |
15.90 |
17.90 |
20.05 |
24.05 |
27.05 |
31.05 |
|
k 最小值 |
6.55 |
7.55 |
8.55 |
9.25 |
11.10 |
12.10 |
13.10 |
14.10 |
16.10 |
17.95 |
21.95 |
24.95 |
28.95 |
|
k1 最小值 |
5.21 |
5.91 |
6.61 |
6.47 |
7.77 |
8.47 |
9.17 |
9.87 |
11.27 |
12.56 |
15.36 |
17.46 |
20.26 |
|
r 最小值 |
0.4 |
0.6 |
0.6 |
0.6 |
0.8 |
0.8 |
0.8 |
0.8 |
1 |
1 |
1 |
1.2 |
1.6 |
|
s 最大值 |
16 |
18 |
21 |
24 |
27 |
30 |
34 |
36 |
41 |
46 |
55 |
65 |
75 |
|
s 最小值 |
15.57 |
17.57 |
20.16 |
23.16 |
26.16 |
29.16 |
33 |
35 |
40 |
45 |
53.8 |
63.1 |
73.1 |
|
x 最大值 |
3.8 |
4.2 |
5 |
5 |
6.3 |
6.3 |
6.3 |
7.5 |
7.5 |
8.8 |
10 |
11.3 |
12.5 |
|
公称长度l的商品规格系列：mm |
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|
公称 |
20 |
25 |
30 |
35 |
40 |
45 |
50 |
55 |
|
60 |
65 |
70 |
80 |
90 |
100 |
110 |
120 |
|
|
130 |
140 |
150 |
160 |
180 |
200 |
220 |
240 |
|
|
260 |
280 |
300 |
|
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|
质量kg |
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|
螺纹规格 d |
M10 |
M12 |
(M14) |
M16 |
(M18) |
M20 |
(M22) |
M24 |
(M27) |
M30 |
M36 |
M42 |
M48 |
|
公称长度 l /mm |
每1000件钢制品的质量 ≈ |
||||||||||||
|
20 |
21.01 |
|
|
|
|
|
|
|
|
|
|
|
|
|
25 |
23.46 |
34.09 |
48.48 |
|
|
|
|
|
|
|
|
|
|
|
30 |
25.92 |
37.65 |
53.36 |
74.61 |
|
|
|
|
|
|
|
|
|
|
35 |
28.37 |
41.21 |
58.23 |
81.16 |
111 |
144.5 |
|
|
|
|
|
|
|
|
40 |
30.83 |
44.77 |
63.11 |
87.7 |
119.1 |
154.8 |
|
|
|
|
|
|
|
|
45 |
33.29 |
48.34 |
67.98 |
94.24 |
127.2 |
165 |
|
|
|
|
|
|
|
|
50 |
35.74 |
51.9 |
72.86 |
100.8 |
135.4 |
175.3 |
226.5 |
|
|
|
|
|
|
|
55 |
38.2 |
55.46 |
77.73 |
107.3 |
143.5 |
185.5 |
239.1 |
283.3 |
|
|
|
|
|
|
60 |
40.65 |
59.02 |
82.61 |
113.9 |
151.6 |
195.7 |
251.7 |
298.1 |
408 |
533.8 |
|
|
|
|
65 |
43.11 |
62.58 |
87.48 |
120.4 |
159.7 |
206 |
264.3 |
312.8 |
427 |
557.1 |
|
|
|
|
70 |
45.56 |
66.15 |
92.36 |
127 |
167.8 |
216.2 |
276.9 |
327.6 |
446.1 |
580.5 |
|
|
|
|
80 |
50.48 |
73.27 |
102.1 |
140 |
184.1 |
236.7 |
302.1 |
357.1 |
484.2 |
627.2 |
981.4 |
1426 |
|
|
90 |
55.39 |
80.39 |
111.9 |
153.1 |
200.3 |
257.2 |
327.3 |
386.6 |
522.3 |
673.9 |
1049 |
1519 |
|
|
100 |
60.3 |
87.52 |
121.6 |
166.2 |
216.6 |
277.6 |
352.5 |
416.1 |
560.4 |
720.6 |
1117 |
1611 |
|
|
110 |
|
94.64 |
131.4 |
179.3 |
232.8 |
298.1 |
377.7 |
445.6 |
598.5 |
767.3 |
1185 |
1704 |
2397 |
|
120 |
|
101.8 |
141.1 |
192.4 |
249 |
318.6 |
402.9 |
475.1 |
636.6 |
814 |
1253 |
1797 |
2519 |
|
130 |
|
|
150.9 |
205.5 |
265.3 |
339.1 |
428.1 |
504.6 |
674.8 |
860.7 |
1321 |
1890 |
2641 |
|
140 |
|
|
160.6 |
218.6 |
281.5 |
359.6 |
453.3 |
534.1 |
712.9 |
907.4 |
1388 |
1983 |
2763 |
|
150 |
|
|
|
231.6 |
297.8 |
380 |
478.5 |
563.6 |
751 |
954.1 |
1456 |
2076 |
2885 |
|
160 |
|
|
|
244.7 |
314 |
400.5 |
503.7 |
593.1 |
789.1 |
1001 |
1524 |
2169 |
3007 |
|
180 |
|
|
|
|
346.5 |
441.5 |
554.1 |
652.1 |
865.3 |
1094 |
1660 |
2355 |
3251 |
|
200 |
|
|
|
|
|
482.4 |
604.5 |
711.1 |
941.6 |
1188 |
1795 |
2540 |
3494 |
|
220 |
|
|
|
|
|
|
655 |
770 |
1018 |
1281 |
1931 |
2726 |
3738 |
|
240 |
|
|
|
|
|
|
|
829 |
1094 |
1374 |
2067 |
2912 |
3982 |
|
260 |
|
|
|
|
|
|
|
|
1170 |
1468 |
2202 |
3098 |
4226 |
|
280 |
|
|
|
|
|
|
|
|
|
1561 |
2338 |
3284 |
4470 |
|
300 |
|
|
|
|
|
|
|
|
|
1655 |
2474 |
3470 |
4713 |
方头螺栓 C级(GB/T 8—1988)
|
方头螺栓C级(GB/T8—1988) mm |
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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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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＝M16、公称长度l＝100mm、性能等级为4.8级、不经表面处理的方头螺栓的标记： 螺栓 GB/T 8 M16×100 |
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|
螺纹规格 d |
b |
e min |
K |
K' min |
r min |
S |
X max |
l的范围 |
|||||
|
l≤125 |
125＜l≤200 |
l＞200 |
公称 |
min |
max |
max |
min |
||||||
|
M10 |
26 |
32 |
— |
20.24 |
7 |
6.55 |
7.45 |
5.21 |
0.4 |
16 |
15.57 |
3.8 |
20～100 |
|
M12 |
30 |
36 |
— |
22.84 |
8 |
7.55 |
8.45 |
5.91 |
0.6 |
18 |
17.57 |
4.3 |
25～120 |
|
(M14) |
34 |
40 |
53 |
26.21 |
9 |
8.55 |
9.45 |
6.61 |
0.6 |
21 |
20.16 |
5 |
25～140 |
|
M16 |
38 |
44 |
57 |
30.11 |
10 |
9.25 |
10.75 |
6.47 |
0.6 |
24 |
23.16 |
5 |
30～160 |
|
(M18) |
42 |
48 |
61 |
34.01 |
12 |
11.1 |
12.9 |
7.77 |
0.8 |
27 |
26.16 |
6.3 |
35～180 |
|
M20 |
46 |
52 |
65 |
37.91 |
13 |
12.1 |
13.9 |
8.47 |
0.8 |
30 |
29.16 |
6.3 |
35～200 |
|
(M22) |
50 |
56 |
69 |
42.9 |
14 |
13.1 |
14.9 |
9.17 |
0.8 |
34 |
33 |
6.3 |
50～220 |
|
M24 |
54 |
60 |
73 |
45.5 |
15 |
14.1 |
15.9 |
9.87 |
0.8 |
36 |
35 |
7.5 |
55～240 |
|
(M27) |
60 |
66 |
79 |
52.0 |
17 |
16.1 |
17.9 |
11.27 |
1 |
41 |
40 |
7.5 |
60～260 |
|
M30 |
66 |
72 |
85 |
58.5 |
19 |
17.95 |
20.05 |
12.56 |
1 |
46 |
45 |
8.8 |
60～300 |
|
M36 |
78 |
84 |
97 |
69.94 |
23 |
21.95 |
24.05 |
15.36 |
1 |
55 |
53.8 |
10 |
80～300 |
|
M42 |
— |
96 |
109 |
82.03 |
26 |
24.95 |
27.05 |
17.46 |
1.2 |
65 |
63.1 |
11.3 |
80～300 |
|
M48 |
— |
108 |
121 |
95.03 |
30 |
28.95 |
31.05 |
20.26 |
1.6 |
75 |
73.1 |
12.5 |
110～300 |
|
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 |
d≤39：4.8级；d＞39：按协议 |
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 |
||||||||||||||
|
公称 |
20 |
25 |
30 |
35 |
40 |
45 |
50 |
(55) |
60 |
(65) |
70 |
80 |
90 |
100 |
|
min |
18.95 |
23.95 |
28.95 |
33.75 |
38.75 |
43.75 |
48.75 |
53.5 |
58.5 |
63.5 |
68.5 |
78.5 |
88.25 |
98.25 |
|
max |
21.05 |
26.05 |
31.05 |
36.25 |
41.25 |
46.25 |
51.25 |
56.5 |
61.5 |
66.5 |
71.5 |
81.5 |
91.75 |
101.75 |
|
公称 |
110 |
120 |
130 |
140 |
150 |
160 |
180 |
200 |
220 |
240 |
260 |
280 |
300 |
|
|
min |
108.25 |
118.25 |
128 |
138 |
148 |
156 |
176 |
195.4 |
215.4 |
235.4 |
254.8 |
274.8 |
294.8 |
|
|
max |
111.75 |
121.75 |
132 |
142 |
152 |
164 |
184 |
204.6 |
224.6 |
244.6 |
265.2 |
285.2 |
305.2 |
|
|
注：尽可能不采用括号内的规格。 |
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|
质量 kg |
|||||||||||||
|
螺纹规格 |
M10 |
M12 |
M14 |
M16 |
M18 |
M20 |
M22 |
M24 |
M27 |
M30 |
M36 |
M42 |
M48 |
|
公称长度 /mm |
每1000件钢制品的质量≈ |
||||||||||||
|
20 |
21.01 |
|
|
|
|
|
|
|
|
|
|
|
|
|
25 |
23.46 |
34.09 |
48.48 |
|
|
|
|
|
|
|
|
|
|
|
30 |
25.92 |
37.65 |
53.36 |
74.61 |
|
|
|
|
|
|
|
|
|
|
35 |
28.37 |
41.21 |
58.23 |
81.16 |
111.0 |
144.5 |
|
|
|
|
|
|
|
|
40 |
30.83 |
44.77 |
63.11 |
87.70 |
119.1 |
154.8 |
|
|
|
|
|
|
|
|
45 |
33.29 |
48.34 |
67.98 |
94.24 |
127.2 |
165.0 |
|
|
|
|
|
|
|
|
50 |
35.74 |
51.90 |
72.86 |
100.8 |
135.4 |
175.3 |
226.5 |
|
|
|
|
|
|
|
55 |
38.20 |
55.46 |
77.73 |
107.3 |
143.5 |
185.5 |
239.1 |
283.3 |
|
|
|
|
|
|
60 |
40.65 |
59.02 |
82.61 |
113.9 |
151.6 |
195.7 |
251.7 |
298.1 |
408.0 |
533.8 |
|
|
|
|
65 |
43.11 |
62.58 |
87.48 |
120.4 |
159.7 |
206.0 |
264.3 |
312.8 |
427.0 |
557.1 |
|
|
|
|
70 |
45.56 |
66.15 |
92.36 |
127.0 |
167.8 |
216.2 |
276.9 |
327.6 |
446.1 |
580.5 |
|
|
|
|
80 |
50.48 |
73.27 |
102.1 |
140.0 |
184.1 |
236.7 |
302.1 |
357.1 |
484.2 |
627.2 |
981.4 |
1426 |
|
|
90 |
55.39 |
80.39 |
111.9 |
153.1 |
200.3 |
257.2 |
327.3 |
386.6 |
522.3 |
673.9 |
1049 |
1519 |
|
|
100 |
60.30 |
87.52 |
121.6 |
166.2 |
216.6 |
277.6 |
352.5 |
416.1 |
560.4 |
720.6 |
1117 |
1611 |
|
|
110 |
|
94.64 |
131.4 |
179.3 |
232.8 |
298.1 |
377.7 |
445.6 |
598.5 |
767.3 |
1185 |
1704 |
2397 |
|
120 |
|
101.8 |
141.1 |
192.4 |
249.0 |
318.6 |
402.9 |
475.1 |
636.6 |
814.0 |
1253 |
1797 |
2519 |
|
130 |
|
|
150.9 |
205.5 |
265.3 |
339.1 |
428.1 |
504.6 |
674.8 |
860.7 |
1321 |
1890 |
2641 |
|
140 |
|
|
160.6 |
218.6 |
281.5 |
359.6 |
453.3 |
534.1 |
712.9 |
907.4 |
1388 |
1983 |
2763 |
|
150 |
|
|
|
231.6 |
297.8 |
380.0 |
478.5 |
563.6 |
751.0 |
954.1 |
1456 |
2076 |
2885 |
|
160 |
|
|
|
244.7 |
314.0 |
400.5 |
503.7 |
593.1 |
789.1 |
1001 |
1524 |
2169 |
3007 |
|
180 |
|
|
|
|
346.5 |
441.5 |
554.1 |
652.1 |
865.3 |
1094 |
1660 |
2355 |
3251 |
|
200 |
|
|
|
|
|
482.4 |
604.5 |
711.1 |
941.6 |
1188 |
1795 |
2540 |
3494 |
|
220 |
|
|
|
|
|
|
655.0 |
770.0 |
1018 |
1281 |
1931 |
2726 |
3738 |
|
240 |
|
|
|
|
|
|
|
829.0 |
1094 |
1374 |
2067 |
2912 |
3982 |
|
260 |
|
|
|
|
|
|
|
|
1170 |
1468 |
2202 |
3098 |
4226 |
|
280 |
|
|
|
|
|
|
|
|
|
1561 |
2338 |
3284 |
4470 |
|
300 |
|
|
|
|
|
|
|
|
|
1655 |
2474 |
3470 |
4713 |
