Nuts Bolts 1. Material: 35k,q235, c1010 2. Surface: Black, ZP, HDG 3. Grade: 4.8,6.8,8.8 4. Standards: DIN933/931/960/961/55 Nuts Bolts1. Material: 35k,q235, c10102. Surface: Black, ZP, HDG3. Grade: 4.8,6.8,8.84. Standards: DIN933/931/960/961/558Grade4.6;4.8;5.8;6.8;8.8 Standard1) DINDIN933;DIN931;DIN934;DIN555;DIN558;DIN7990; DIN961;DIN960;DIN601;DIN603;DIN571;DIN69232)ASMEASME B18.2.1;ASM B18.2 ...