... Zinc-plated. Product Description:DIN 7504 Hex Head Self-tapping Screw MATERIAL: carbon steel, stainless steel HEAD STYLES: hex washer, pan ... , pan framming, hexagon flange, bugle, wafer, hinge, binding, button, etc SCREW DRIVERS: PHILLIPS, SLOTTED, SQUARE, HEXAGON /Hex, etc SIZE: #6, #7, #8 ...