Hexagon Nuts and Bolt 1. Material: 35k,q235, c1010 2. Surface: Black, ZP, ... . Grade: 4.8,6.8,8.8 4. Standards: DIN933 Hexagon Nuts and Bolt1. Material: 35k,q235, c10102. Surface: Black, ZP, HDG3 ... L/C Min Order1000kg or 1 Tons for each size Hexagon Nuts and Bolt