GB/T 5783-2016

This standard specifies the type, dimensions, technical requirements, and marking of fully threaded hexagonal head bolts. This standard applies to hexagonal head bolts with thread sizes of M1.6 to M64, fully threaded, with performance grades of 5.6, 8.8, 9.8, 10.9, A270, A470, A250, A450, CU2, CU3, and AL4, and product grades of A and B. Grade A is used for bolts with d=1.6 mm to 24 mm and l≤10 d or l≤150 mm (according to the smaller value); Grade B is used for bolts with d > 24 mm or l > 10 d or l > 150 mm (according to the smaller value). Note: Except that this product is made with fully threaded design and the maximum nominal length of the preferred length specification is 200 mm, the rest is the same as GB/T 5782.