din127 size :m3--m64 material :Carbon Steel, Alloy Steel, Stainless Steel din127size :m4--m64material :Carbon Steel, Alloy Steel, Stainless Steel, Copper, Nylon, Plastic, etccoating :zinc .plain ,HDG ... , nylon insert lock nuts, cap nuts, slotted nuts, rivet nutWASHERS: flat washers, spring washers, lock washersSCREWS: machine screws, self tapping screws ...