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GB /T 70.3 - 2000 Hexagon socket countersunk head screws


Unit: mm
国标GB /T70.3 - 2000 GB70.3 70.3GB Hexagon socket countersunk head screws
Nominal Length L Tips:seclect Nominal Length L and get Weight .
Screw Thread
d
M3 M4 M5 M6 M8 M10 M12 (M14) M16 M20
P Pitch
b Ref.
dk Theoretical max
Actual min
ds max
min
e ① min
k max
s ① Nominal Size
max 12.9
Other
min
t min
Minimum tensile load(N) ② 8.8
10.9
12.9
0.5 0.7 0.8 1 1.25 1.5 1.75 2 2 2.5
18 20 22 24 28 32 36 40 44 52
6.72 8.96 11.2 13.44 17.92 22.4 26.88 30.8 33.6 40.32
5.54 7.53 9.43 11.34 15.24 19.22 23.12 26.52 29.01 36.05
3 4 5 6 8 10 12 14 16 20
2.86 3.82 4.82 5.82 7.78 9.78 11.73 13.73 15.73 19.67
2.3 2.87 3.44 4.58 5.72 6.86 9.15 11.43 11.43 13.72
1.86 2.48 3.1 3.72 4.96 6.2 7.44 8.4 8.8 10.16
2 2.5 3 4 5 6 8 10 10 12
2.045 2.56 3.071 4.084 5.084 6.095 8.115 10.115 10.115 12.142
2.060 2.58 3.080 4.095 5.140 6.140 8.175 10.175 10.175 12.212
2.020 2.52 3.020 4.020 5.020 6.020 8.025 10.025 10.025 12.032
1.1 1.5 1.9 2.2 3 3.6 4.3 4.5 4.8 5.6
3220 5620 9080 12900 23400 37100 53900 73600 100000 162000
4180 7300 11800 16700 30500 48200 70200 96000 130000 204000
4910 8506 13800 19600 35700 56600 82400 112000 154000 239000
Weight of per 1000 steel products(≈kg)
- - - - - - - - - -
①,emin=1.14smin;
Combined gauging of socket dimensions and , see GB/T 70.5
②,80% of the values specified in GB/T 3098.1
Alternative history
GB /T 70.3 - 2000 GB /T 70.3 - 2008
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1
China Mainland Hiawa Hardware & Machinery Co., Ltd.
Zhou Zhihao
Mobile Phone: +86-13912518661 Telephone: +86-515-85528266
Material: Stainless Steel, Alloy Steel; Specification: M16-M36; Surface Treatment: Passivating, Hot-dip Galvanizing; Nominal Length: 50mm-1500mm; Grade: A2-70, A2-80, A4-70, A4-80, B8, B8M, C3-80, 8.8, 10.9; Customized
 Contact us via Email
2
China Mainland Dongtai Huawei Standard Component Co., Ltd.
Frank Qiu
Telephone: +86-515-85521918/85525868/85528009/85922919/85923919
Material: stainless steel 304, 316; Nominal diameter: M2-M20; Nominal length: according to customer requirement
 Contact us via Email
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