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Language：CHINESESENGLISH
GB/T 3632~363 Steel structure adopts high strength torsional shear bolt type Size
Functions: torsional high strength shear type is the advanced large hexagonal high-strength bolt and high strength bolt, belonging to a kind of standard parts. After first tight and end tight construction, it is generally used for permanent connection.Application: suitable for railway and Highway Bridge, boiler steel structure, industrial buildings, high-rise buildings, tower mast structure, hoisting machinery and other friction type high strength bolt connection.
Thread specifications -d
M16
M20
M22
M24
M27
M30
Screw pitch P
2
2.5
3
3.5
da
max
18.83
24.4
26.4
28.4
32.84
35.84
ds
16.43
20.52
22.52
24.52
27.84
30.84
min
15.57
19.48
21.48
23.48
26.16
29.16
dw
27.9
34.5
38.5
41.5
42.8
46.5
dk
30
37
41
44
50
55
k,
nom
10
13
14
15
17
19
10.75
13.9
14.9
15.9
17.9
20.05
9.25
12.1
13.1
14.1
16.1
17.95
k'
12
16
18
k"
21
23
24
25
r
1.2
1.6
db
11.3
15.6
16.9
19.3
21.4
11
13.8
15.3
16.6
18.7
20.8
dc ≈
12.8
17.8
21.9
de ≈
20
22
Mechanical behavior:
Grade
Tensile strength
Yield strengthσ0.2
Elongation δ5
Shrinking percentage Ψ
σь
Mpa
%
10.9S
1040~1240
940
42
8.8S
830~1030
660
45
Loading force:
Thread specifications-d
Pressed force section mm2
157
245
303
353
459
561
Pull force KN
163~195
255~304
315~376
367~438
477~569
583~696
130~162
203~252
251~312
293~364
381~473
466~578
Materials for steel bolt and nut, flat pad:
Type
Performance level
Thread specifications
Materials
Bolt
M12~M24
20MnTiB
M27~M30
35VB
M12~M16
35#
M20~M24
Nut
8H 10H
M12~M30
Washer
35~45 HRC
12~30
45#
Chemical component:
C%
Si%
Mn%
Ti%
V%
B%
P%
S%
0.17~0.24
0.17~0.37
1.30~1.60
0.04~0.10
0.0005~0.0035
≤0.035
0.31~0.37
0.50~0.90
0.05~0.12
0.001~0.004
≤0.04
0.32~0.40
0.50~0.80
0.42~0.50
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