GB/T 3104-1982 Width across flats of hexagonal fasteners GB/T3104-1982 Standard download decompression password: www.bzxz.net
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National Standard of the People's Republic of China Fasteners Widths across flats of hexagon products Fasteners --Widths across flats of hexagon products Introduction UDC 621.882 GB 3104-82 (Confirmed in 1988)bzxz.net This standard is equivalent to the international standard ISO272-1982 "Fasteners-Width across flats of hexagon products". This standard specifies the width across flats of hexagonal products and is applicable to standard and non-standard fasteners. 2 Dimensions are as specified in Figures 1, 2 and the table. Thread diameter Standard series Enlarged series Published by National Bureau of Standards on May 22, 1982 Products with flange face Thread diameter Standard series Implementation on July 1, 1983 Thread diameter Standard series Enlarged series 3The ratio of bearing surface to stress area is shown in Figure 3. Body and GB 3104—82 Products with flanged surface ·Hexagonal flange series Thread diameter .2-2-.30- 41 ----46 -+-50 --1 55 ----50 Enlarged series ------- _46--- 50 --- 5 Standard series M6M8 M10 M12 M14 M16 M18 M20 M22 M24M27M30M33M36 Additional remarks: This standard was proposed by the Ministry of Machinery Industry of the People's Republic of China. This standard was drafted by the Standardization Research Institute of the Ministry of Machinery Industry. This standard was first issued in May 1982. This standard was confirmed in April 1988. Standard Series 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.