... ,Service Fi All kinds of Self Drill Screw • Material: Carbon steel & stainless steel• Head style: various• Size: all size ... one TonSize :M4 to M50 #10 to 2Specifications:Various shape size according to client’s requirementStandard:ISO, ... DIN, ANSI, JIS, BS, Non-standardSurface :Galvanized (Various of color), dacromet, blackened, phosphatingCertificationISO/TS16949,ISO9001,GJB9001B - 2009Professional: ...