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Click Specification

(Non-preferred) dimensions in parentheses.

Unit:mm

Bolt or Screw and Washer Assemblies with Plain Washers

GB /T 9074.1 - 2018

Display drawing:

国标GB /T9074.1 - 2018 GB9074.1 9074.1GB Bolt or Screw and Washer Assemblies with Plain Washers
国标GB /T9074.1 - 2018 GB9074.1 9074.1GB Bolt or Screw and Washer Assemblies with Plain Washers
Thread Size
d
M2 M2.5 M3 (M3.5) M4 M5 M6 M8 M10 M12
P Pitch
α max
h Nominal Size Type s
Type N
Type L
dc Max Type s
Type N
Type L
0.4 0.45 0.5 0.6 0.7 0.8 1 1.25 1.5 1.75
0.8 0.9 1 1.2 1.4 1.6 2 2.5 3 3.5
0.6 0.6 0.6 0.8 0.8 1 1.6 1.6 2 2
0.6 0.6 0.6 0.8 0.8 1 1.6 1.6 2 2.5
0.6 0.6 0.8 0.8 1 1 1.6 2 2.5 3
4.5 5 6 7 8 9 11 15 18 20
5 6 7 8 9 10 12 16 20 24
6 8 9 11 12 15 18 24 30 37
①,Bolts and screws shall have a thin rod with a diameter of d. The diameter of the washer shall conform to GB/T 97.4 for free rotation.
②,The distance from the bearing surface to the beginning of the complete thread of the first buckle should be increased to the maximum thickness at which the gasket can be accommodated. For this type of product, the thread is ground to a position close to the gasket.
③,The size of the flat washer should be in accordance with GB/T 97.4
④,After the agreement between the supplier and the buyer, a U-shaped undercut can be used under the hex head bolt head.

Alternative history

GB /T 9074.1 - 1988 GB /T 9074.1 - 2002 GB /T 9074.1 - 2018
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