Black Oxide, 8.8 SteelDIN 912ISO 4762Master Assortment Kits are Available. Click HereClick Here for Technical Data SheetM18 Socket Cap Screws, 8.8 Steel, Black OxidePriceFrom $1.00LengthSelectQuantitySelectQuantityAdd to cartAlso available in these materials 12.9 Steel A2 Stainless Steel A4 Stainless Steel Nylon Also available these finishes Black Zinc Zinc Flake Variations Also available vented (slotted or center) in A2 Stailess Steel