Tapping screws 1.Material:Stainless steel,Carbon steel 2.Surface:Dacromet plated,plastic spraying 3.Size:ST2.9-ST9.5 tapping screw:Materials: stainless ... /T,DIN,JIS,BSW,ANSI,ISO & non-standard productsSurfacePlain, Yellow zinc, black phosphated, grey phosphated, nickel platingQualityBe affordable but of very ...