Stainless Steel screws: Self Tapping Screws,Self Drilling Screws,Wood Screws,Chipboard Screws,Roofing Screws,Drywall Screws,Machine Screws,Hex Socket Head Cap Screws,Hex Socket Headless Set Screws. B.STANDARDS: ANSI(IFI).DIN.DS.JIS and Per Drawings. C.MATERIAL: ANSI 302HQ,304M,305,316C,410 Stainless Steel