GB/T 9074.15-1988 Hexagon head bolt and spring washer assemblies

GB/T 9074.15-1988 Hexagon head bolt and spring washer assembly GB/T9074.15-1988 Standard download decompression password: www.bzxz.net

1 Subject Content
National Standard of the People's Republic of China
Helagon head bolt and siagle colsplng lock washer assemblies
Helagon head bolt and siagle colsplng lock washer assemblies This standard specifies hexagon head bolt and siagle colsplng lock washer assemblies with thread specifications of M3~M12. 2 Reference Standards
GB5783 Hexagon head bolts-Full thread-Class A and B GB9074.26 Spring washers for assemblies
GB5267 Threaded fasteners-Electric chain
GB1237 Marking method for fasteners
Fastener acceptance inspection, marking and packaging
3 Dimensions
The dimensions are shown in the following figure and Table 1.
UDC 621.8a2
GB9074.15—88
For the type of rod joint
National Machinery Industry Commission approved 532 on April 16, 1988Www.bzxZ.net
t919-D1.01 implementation
Screw-to-screw specification d
Reference)
GB $074.15—88
Note: It is best not to use the specifications in brackets. 4 Technical requirements
Technical conditions are shown in Table 2.
Surface treatment
Other requirements
Acceptance and packaging
GB 9074.16—8
G8 5783
Zinc-embedded passivation
②Oxidation
GB5287
GB9074.26
The thread should be able to rotate freely without falling off
Note: Except for aimax, damax and rmin, the rest shall comply with the provisions of GB 5783. 5 Marking
5.1 Marking method shall comply with the provisions of GB1237.
5.2 Marking example;
Thread specification d=M5, nominal length! =20mm, performance grade 8.8, surface zinc-plated passivated hexagonal head bolt and spring-loaded washer assembly marking:
Screw assembly GB 9074.15
M 5 × 20
Additional instructions:
This standard is proposed by the National Technical Committee for Standardization of Fasteners. This standard is under the jurisdiction of the Standardization Institute of the State Machinery Industry Commission. This standard is drafted by the Standardization Institute of the State Machinery Industry Commission, 534
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