This standard specifies hexagonal head tapping screws with thread specifications of ST 2.2 to ST 9.5. This standard is equivalent to the international standard ISO 1479-1983 "Hexagonal head tapping screws". GB/T 5285-1985 Hexagonal head tapping screws GB/T5285-1985 Standard download decompression password: www.bzxz.net
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National Standard of the People's Republic of China Hexagon head tapping screws Heiagon head tapping screws This standard specifies hexagon head tapping screws with thread effect specifications of ST 2.2 -ST 9.5. This standard is equivalent to the international standard IS01479-1983 "Hexagon head tapping screws". 2 Reference standards GB528085 "Thread for self-tapping screws"! GB 3098.5-85 "Mechanical properties of fasteners - tapping screws" GB3103.1-82 "Tolerances of fasteners - bolts, screws and nuts" GB5267-85 "Threaded fasteners - coating": GB 90-85 "Fasteners acceptance inspection, marking and installation". 3 Size Shape optional Issued by National Bureau of Standards on August 1, 1985 UDC 621.82.215 .082.8 GB528.5—85 Implemented on June 1, 1986 GR 5285 --B5 (season)bzxz.net 4 Technical conditions 5 Marking Mechanical properties Surface treatment Acceptance and packaging Product grade GB 5285-85 GB 5280 —85 GB 3098.5 -~ 85 GB 3103.1 82 Zinc passivation GB526785 GB 90 — 85 Thread specification ST3.5, nominal length 1=16mm, surface zinc-plated passivation C-type hexagon head self-tapping screws marking example Self-tapping screws GB5285—85-ST3.5×16C Additional instructions: This standard was proposed by the Ministry of Machinery Industry of the People's Republic of China and is under the jurisdiction of the Standardization Research Institute of the Ministry of Machinery Industry. This standard was drafted by the Standardization Research Institute of the Ministry of Machinery Industry. 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.