Detailed Product Description Hexagon bolt;1.Head types: hexagon head, pan head, round flange head, flat head, countersunk head2.Size: M6 to M483.Material: mild steel, 35C, 45C, SUS304, SUS316, brass. other material is available.4.Standards: DIN934 & ANSI B18.2.2 & JIS B1181, DIN931, DIN933 and other standard is available5. Finish: zinc plate or customer requires is available.