spec :spring lock washer size :m3--m64 material :Carbon Steel, Alloy Steel, Stainless Steel spec :spring lock washersize :m4-- ... heavy hex 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, set screws, ... :0086-136-0181-1 spring lock washer