Hex Bolts and Nuts 1. Material: 35k,q235, c1010 2 ... 4.8,6.8,8.8 4. Standards: DIN933/931 Hex Bolts and Nuts1. Material: 35k,q235, c10102. Surface: Black, ... ;ASM B18.16.43)BSBS917 4)ISOISO4014;ISO4017;DIN-EN1661;DIN-EN14218MaterialCarbon Steel, Mild Steel, C1008,C1010,C1035, ... for each size Product name:DIN933/DIN601/ISO4017 hex head boltGrade:4.6,4.8,5.6 ... meet the demand of the market. Hex Bolts and Nuts