... >Product Name: Carriage Bolts 2>Standard: DIN603, B.S, IFI C-40, AS1390 3>Class: 4.8/8.8/ Gr.2 ... German standard (DIN), American standard (ANSI), British standard, BS, anchor bolt bolts and supporting the nuts and washers, And according to ... factory product features play red play expertise of cold hexagonal bolt, carriage bolt, guardrail customers all bolts, and now the strength development ...