GB /T 70.2 - 2008 Hexagon socket button head screws


Unit: mm
Screw Thread
d
M3 M4 M5 M6 M8 M10 M12 M16
P Pitch
a max
min
da max
dk max
min
e min
k max
min
r min
s Nominal Size
max
min
t min
w min
Minimum tensile load(N) 8.8
10.9
12.9
0.5 0.7 0.8 1 1.25 1.5 1.75 2
1 1.4 1.6 2 2.5 3 3.5 4
0.5 0.7 0.8 1 1.25 1.5 1.75 2
3.6 4.7 5.7 6.8 9.2 11.2 14.2 18.2
5.7 7.60 9.50 10.50 14.00 17.50 21.00 28.00
5.4 7.24 9.14 10.07 13.57 17.07 20.48 27.48
2.303 2.873 3.443 4.583 5.723 6.863 9.149 11.429
1.65 2.20 2.75 3.3 4.4 5.5 6.60 8.80
1.40 1.95 2.50 3.0 4.1 5.2 6.24 8.44
0.1 0.2 0.2 0.25 0.4 0.4 0.6 0.6
2 2.5 3 4 5 6 8 10
2.08 2.58 3.08 4.095 5.14 6.14 8.175 10.175
2.02 2.52 3.02 4.02 5.02 6.02 8.025 10.025
1.04 1.3 1.56 2.08 2.6 3.12 4.16 5.2
0.2 0.3 0.38 0.74 1.05 1.45 1.63 2.25
3220 5620 9080 12900 23400 37100 53900 100000
4180 7300 11800 16700 30500 48200 70200 130000
4910 8560 13800 19600 35700 56600 82400 154000
①,emin=1.14smin
②,GB/T 3098 . 1 specifies 80% of the value .
Alternative history
Suppliers
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1
China Mainland Ningbo Yinzhou Hengxi Yonglian Fastener Factory
Mobile Phone: +86-13967802297 Telephone: +86-574-88461228
Material: Carbon Steel, Alloy Steel; Specification: M5-M120; Surface Treatment: Blackening, White Zinc, Blue and White Zinc, Colored Zinc, Phosphating, Dacromet, Environmental Protection Electroplating, Mechanical Galvanizing, Hot Dip Galvanizing, Teflon; Nominal Length Range 6mm-120mm; Grade :4.8,8.8,10.9,12.9; Red (Hot Forging) Bolts&Studs , Double Ended Studs As Per Drawing
Contact us via Email
2
China Mainland Suzhou Hanlinyu Precision Hardware Co., LTD
Li Meihua
Mobile Phone: +86-13771867939/13771793559 Telephone: +86-512-65868465
Material: Carbon Steel; Specification: M3-M16
Contact us via Email
3
China Mainland Suzhou Yongchuang Fastener Factory
Mr. Tang
Mobile Phone: +86-15298892886 Telephone: +86-512-66700967
Material: stainless steel, carbon steel; Nominal diameter: M1-M14; Nominal length: 5-400mm
Contact us via Email
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