Hex Flange Nuts 1. Material: 35k,q235, c1010 2. Surface: ... : 4.8,6.8,8.8 4. Standards: DIN933/931 Hex Flange Nuts1. Material: 35k,q235, c10102. Surface: Black, ZP ... Tons for each size Product name:DIN933/DIN601/ISO4017 hex head boltGrade:4.6,4.8,5.6,5.8, ... 50-100 M36*50-100 Product name:DIN931/DIN960/ISO4014 hex head boltGrade: 4.6 4.8 5.6 5.8 ... the quality to meet the demand of the market. Hex Flange Nuts