TAPPING SCREW Standard:DIN Mater:Carbon Steel TAPPING SCREWMaterial:C1022,304,316Diameter:2.9mm--6.3mm,#6--#14Length:6.5--150mmFinish:zinc plated,Cr3+Cr6+Zinc plated,blackThread:UNC, UNFPackage:25kg/cartonNote:the part here of only shows our manufacturing capabilities,if customershave any parts of similar manufacturing methods,please send us the drawings and specifications for our accurate ...