... ,GB,DIN,JIS ISO9001-2008,SGS,ROHS 1.The specification of All kinds of cnc part 1)Features:1.Head type: flat/countersunk ... 8.8 10.9 12.9 FeaturesGood anti-corrosion ability, kinds of coatingsMOQ 50pcsAfter-sale serviceIf there are any quality problems, please ... , stainless steel, copper, brass, alloy, Aluminum, etc.FinishZimc plated(Cr,3+);zinc plated(Cr,6+); hot dipped galvanized;dacromet;nickle plated ...