GB/T 9074.16-1988 Hexagon head bolt and serrated lock washer assembly GB/T9074.16-1988 Standard download decompression password: www.bzxz.net
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1 Subject content National Standard of the People's Republic of China Hexago head bolt and serrated lockwasher external teeth assembliesUDC 621.8B2 GB9074.16—88 This standard specifies hexagon head bolt and serrated lockwasher external teeth assemblies with thread specifications of M3~M10. 2 Reference standards GB 5783 Hexagon head bolt-full thread-A and B thread GB9074.27 External tooth pin lockwasher for assembly GB5267 Electroplating layer of threaded fasteners GB 1237 Marking method of fasteners Fastener acceptance inspection, marking and installation Dimensions The size is shown in the following figure and Table 1. Type of head joint Approved by the State Machinery Industry Commission on April 16, 1968, and implemented on January 199-01-01 Thread specification d Note: Specifications in brackets should be avoided as much as possible. 4 Technical conditions Technical conditions are shown in Table 2. GB 8074.16-$8 Surface treatment Other technical requirements Acceptance and packaging GB 9074.16—88 GB 5783 ①Galvanized passivation ②Oxidation GB5267 GE 9074.27 The whole cabinet should be able to rotate freely without falling off Note: Except for ax, damx and rmln, the rest shall comply with the provisions of GB5783. 5 Marking 5.1 Marking method shall comply with the provisions of GB1237. Www.bzxZ.net 5.2 Marking example: Explosion pattern specification d=M5, nominal length! -20mm, performance grade 8.8, zinc passivated surface hexagonal bolt and external serrated lock washer assembly marking: bolt assembly FGB9074.16 M5×20 Additional instructions: This standard is proposed by the National Technical Committee for Fastening Standardization. This standard is under the jurisdiction of the National Machinery Industry Commission Standardization Institute. This standard is drafted by the National Machinery Industry Commission Standardization Institute. 537 Tip: This standard content only shows part of the intercepted content of the complete standard. If you need the complete standard, please go to the top to download the complete standard document for free.