Grade:8.8/10.9/12.9 Surface Protection: Black oxide, Phosphate, Zinc plated 1/M2 M3,M5,M5,M7..M9 2/ L:3/5/6/7/...../10 Knights introductionScrew with Plastic Head Confirmat Screw 1.Specification:5*40,5*50,6.3*50,7*50,7*70,7*85 2.Material:C1008,C1006 3.Standard:DIN1. Screw with Plastic Head Confirmat Screw Material:C1008 Surface:zinc or cooper Size:as follow info with cap or notConfirmat ...