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(Non-preferred) dimensions in parentheses.

Hexagon Socket Countersunk Head Screws

GB /T 70.3 - 2008

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国标GB /T70.3 - 2008 GB70.3 70.3GB Hexagon Socket Countersunk Head Screws
Calculate weight and price. Weight 1000 pcs : kg x $ per kg = $ 1000 pcs
Default density g/cm3
Nominal Length L Tips:seclect Nominal Length L and get Weight Thread length.
Thread Size
d
M3 M4 M5 M6 M8 M10 M12 (M14) M16 M20
P Pitch
dk Theoretical max
Actual min
ds max
min
e min
k max
s Nominal Size
max
min
t 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 2 2.5
6.72 8.96 11.20 13.44 17.92 22.40 26.88 30.8 33.60 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
2.303 2.873 3.443 4.583 5.723 6.863 9.149 11.429 11.429 13.716
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
2.080 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)
- - - - - - - - - -
Length of Thread b Ref.
- - - - - - - - - -
①,emin=1.14smin;
Combined gauging of socket dimensions and , see GB/T 70.5
②,80% of the values specified in ISO 898-1.

Alternative history

Suppliers

Best price if from GlobalFastener.com.
Suzhou Yongchuang Fastener Factory
  • Mr. Tang

  • +86-15298892886

  • +86-512-66700967

  • Material: stainless steel, carbon steel; Nominal diameter: M1-M14; Nominal length: 5-400mm

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