... :m3--m64 material :Carbon Steel, Alloy Steel, Stainless Steel spec :spring lock washersize :m4--m64material :Carbon Steel, Alloy Steel, Stainless Steel, Copper ... nuts, hex flange nuts, nylon insert lock nuts, cap nuts, slotted nuts, rivet nutWASHERS: flat washers, spring washers, lock washersSCREWS: machine screws, self tapping screws ...