GB/T 9074.15-1988 Hexagon head bolt and spring washer assembly GB/T9074.15-1988 Standard download decompression password: www.bzxz.net
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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, 1988 t919-D1.01 implementationbzxz.net 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 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.