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(Non-preferred) dimensions in parentheses.

Square Head Bolts - Product Grade C

GB 8 - 1988

Display drawing:

 *Models with different eras.

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.
Screw Thread
d
M10 M12 (M14) M16 (M18) M20 (M22) M24 (M27) M30 M36 M42 M48
P Pitch
e min
k Nominal Size
max
min
k1 min
r min
s max
min
x max
1.50 1.75 2.0 2.0 2.5 2.5 2.5 3 3 3.5 4 4.5 5
20.24 22.84 26.21 30.11 34.01 37.91 42.9 45.5 52.0 58.5 69.94 82.03 95.03
7 8 9 10 12 13 14 15 17 19 23 26 30
7.45 8.45 9.45 10.75 12.90 13.90 14.90 15.90 17.90 20.05 24.05 27.05 31.05
6.55 7.55 8.55 9.25 11.10 12.10 13.10 14.10 16.10 17.95 21.95 24.95 28.95
5.21 5.91 6.61 6.47 7.77 8.47 9.17 9.87 11.27 12.56 15.36 17.46 20.26
0.4 0.6 0.6 0.6 0.8 0.8 0.8 0.8 1 1 1 1.2 1.6
16 18 21 24 27 30 34 36 41 46 55 65 75
15.57 17.57 20.16 23.16 26.16 29.16 33 35 40 45 53.8 63.1 73.1
3.8 4.2 5 5 6.3 6.3 6.3 7.5 7.5 8.8 10 11.3 12.5
Weight of per 1000 steel products(≈kg)
- - - - - - - - - - - - -
Length of Thread b
- - - - - - - - - - - - -

Alternative history

Suppliers

Best price if from GlobalFastener.com.
Wenzhou Fengding Fastener Manufacture Co., Ltd.
  • Mr.Huang

  • +86-18857755588/13676725866

  • +86-577-86500568

  • Material: carbon steel,copper,Stainless steel;Surface treatment: according to customers' requirements; Grade: 4.8, 8.8, 10.9, 12.9; Nominal diameter: M3-M20; Nominal length: 5-300mm

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