... ofstandard parts, mainly the production of industrial and civil, and otherstandard parts. Xiongguang adapt to the ... Detailed Product DescriptionHex Bolts and Nuts1. Material: 35k,q235, c1010 2. Surface: Black, ZP, HDG 3. Grade ... :4.8,6.8,8.8 4. Standards: DIN933/931 Hex Bolts and Nuts1 ... . Material: 35k,q235, c10102. Surface: Black, ZP, HDG3. Grade: 4.8 ...