... ,black 5.Hot zinc,dacromet We are a large hex bolts and nuts manufacturer with capacity of over 200MT ... per day.Range size: (1)Hex. BoltsDiameter.: M6~M56(1/4~2")Length: 500mm max ... , ANSI/ASME B 18.2.1, ISO4014/4017(2).HEX SOCKET CAP SCREWS (ALLEN BOLTS).Diamete.: M6~M56(1/ ... UNI,JIS,ISOincl.DIN603, ANSI/ASME 18.5, ISO8677(4)Hex. Nuts:Diameter.: 3MM--72MM (1/4"---3")Grade: 6 ...