... a large hex bolts and nuts manufacturer with capacity of over 250MT per day.Range size:(1) Hex Bolts Diameter : M6~M56(1/ ... 1,ISO4014/4017(2) Hex Socket Cap Screws (ALLEN BOLTS) Diameter : M6~M56(1/4~2'') Length : 500mm max.(3 ... DIN,ANSI,UNI,JIS,ISO incl.DIN912,ISO4762(3) Hex Nuts Diameter : 3MM~72MM(1/4''~3'') Grade : 6/ ... 986/982,ANSI18.2.2,BS1083,ISO4032/4035 Bolts and Nuts,DIN934,DIN931,DIN934,DIN975