... , 8.8Length: 13mm ~ 254mm (1/2" - 10"). Finish: Plain, zinc plated, galvanized, nickel plated. Black Standard model: DIN, GB, ISO, ANSI, ASME, JIB ... etcMaterial: Carbon Steel, Stainless steel, Aluminium, Brass Coating: Plain, zinc plated, galvanized, nickel plated. BlackWe can supply you with full kinds of fasteners ... Best Choice for You Slotted Pan Head Self-Drilling Screws Zinc Plated