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GB /T 12-1988 Cup head square neck bolts


Unit: mm
国标GB /T12-1988 GB12 12GB(GB12-1976) Cup head square neck bolts
Nominal Length L Tips:seclect Nominal Length L and get Weight .
Screw Thread
d
M6 M8 M10 M12 M14 M16 M20
P Pitch
b L≤125
125<L≤200
dk max
min
k1 max
min
k max
min
s max
min
1 1.25 1.5 1.75 2 2 2.5
18 22 26 30 34 38 46
/ 28 32 36 40 44 52
13.1 17.1 21.3 25.3 29.3 33.6 41.6
11.3 15.3 19.16 23.16 27.16 31 39
4.4 5.4 6.4 8.45 9.45 10.45 12.55
3.6 4.6 5.6 7.55 8.55 9.55 11.45
4.08 5.28 6.48 8.9 9.9 10.9 13.1
3.2 4.4 5.6 7.55 8.55 9.55 11.45
6.3 8.36 10.36 12.43 14.43 16.43 20.52
5.84 7.8 9.8 11.76 13.76 15.76 19.22
Weitht of per 1000 steel products(≈kg)
- - - - - - -
Suppliers  
1
 
China Mainland Shanghai Chengtai Hardware Manufacturing Co., Ltd.
Mr.Zhuge
Mobile Phone: +86-13901820935 Telephone: +86-21-59742477/59740118
Material: stainless steel; Specification: complete; Surface treatment: according to customer requirement
2
 
China Mainland Suzhou Judong Hardware Co., Ltd.
Jerry Chung
Mobile Phone: +86-18912780677 Telephone: +86-512-65438780-3

3
 
China Mainland Wenzhou Zhanbo Industrial Co., Ltd.
Mr.Li
Mobile Phone: +86-13777773230 Telephone: +86-577-55888576
Material: carbon steel, alloy steel; Specifications range: M6-M20; Length: 10mm-150mm; Surface treatment: galvanized (white, color, military green), nickel,black,Dacro
You will get the best price if inform us the information comes from GlobalFastener.com.
Relevant Standards
1
加强半圆头方颈螺栓
[GB]
GB /T 794-1988
Strengthened cup head square neck bolts
2
半圆头方颈螺栓
[GB]
GB 12-1976
Semi-round head square neck bolts
3
圆头方颈螺栓
[GB]
GB /T 12-2013
Cup head square neck bolts
4
带凹槽半圆头方颈螺栓
[JIS]
JIS B 1171-1996
Cup head square neck bolts(With indentation)
5
圆头方颈螺栓Table2
[ANSI/ASME]
ANSI/ASME B 18.5-2008
Round head square neck bolts
6
粗制半圆头方颈螺栓Table1
[BS]
BS 325-1947
Black cup aquare neck bolts
7
米制圆头方颈螺栓
[AS]
AS /NZS 1390-1997
ISO metric cup head square neck bolts