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BS 325-1-1947
Black cup square neck bolts-Table 1
Nom
P
dk
k
k1
r
ds
1/4
20
0.562
0.125
0.188
0.0313
0.25
5/16
18
0.703
0.156
0.234
0.0313
0.3125
3/8
16
0.844
0.188
0.281
0.0313
0.375
7/16
14
0.984
0.25
0.328
0.0313
0.4375
1/2
12
1.125
0.281
0.375
0.0313
0.5
5/8
11
1.406
0.375
0.469
0.0469
0.625
3/4
10
1.688
0.438
0.562
0.0469
0.75
7/8
9
1.969
0.5
0.656
0.0625
0.875
1
8
2.25
0.562
0.75
0.0625
1
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Ningbo Dexin Fastener Co., Ltd.
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Region:
zhejiang
Standard list:
Core Product:
Carriage bolts, Guardrail bolt Special bolts, non-standard bolts Eye bolt, eye screw Square head bolts Split cotter pins
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Manufacturer
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