This standard stipulates that the thread specifications are M8X1~M64X4, fine thread, full thread, performance grades 5.6, 8.8, 10.9, A2-70, A4-70, A2-50, A4-50, CU2, CU3 and AL4 grades, Hexagon bolts of product grades A and B. Grade A is used for d=8~24mm and L≤10d or L≤150mm (according to the smaller value); B grade is used for bolts with d>24mm or L>10d or L>150mm (according to the smaller value). If other technical requirements are required, they should be selected from current standards (such as GB/T 196, GB/T 3106, GB/T 3098.1, GB/T3098.6 and GB/T 3103.1). Coarse thread bolts specified in GB/T 5783 should be preferred.
GB/T 5786-2000 history
2016GB/T 5786-2016 Hexagon head bolts with fine pitch thread.Full thread
2000GB/T 5786-2000 Hexagon head bolts with fine pitch thread-Full thread