... -quality team that can provide comprehensive and timely service tocustomers.Hex Bolts and Nuts1. Material: 35k,q235, c1010 2. Surface: ... 4.8,6.8,8.8 4. Standards: DIN933/931 Hex Bolts and Nuts1. Material: 35k,q235, c10102. Surface: Black, ... Standards: DIN933/931/960/961/558Productname:DIN933/DIN601/ISO4017 hex head boltGrade:4.6,4.8,5.6,5 ... quality control to ensure good quality. DIN934 hex nuts m12