... ),etc3.MaterialCarbon Steel,Alloy steel,stainless steel and brass4.Grade4.6.8.10 etc5.FinishBlack,Zinc plated,Copper plating,Phosphating,Mechanical galvanized ... in Beijing, China. We have over 8000 staff members.Through 30 years' development, our company has become a leading and famous ... EquipmentStrong PackageMode of TransportationThe Best Choice for You GRADE-4.6.8.10 Hex Head NUT DIN 934