Hexagonal-Nuts-Washers-ZP-M10-Forge Pack-10-Forge Fix-FPNUT12-p-These-Hexagon-Nuts-&-Washers-are-bright-zinc-plated-for-increased-corrosion-resistance-The-hexagonal-shape-of-the-nut-is-designed-to-be-driven-by-a-wrench-spanner-&-provides-excellent-torque-when-done-so-The-washer-distributes-the-load-of-a-the-nut-&-helps-to-reduce-vibration-p-p-Zinc-coatings-prevent-oxidation-of-the-protected-metal-to-create-a-longer-lasting-finish-It-does-this-by-forming-a-barrier-&-by-actin