... --3",m4-m72 coating :zinc,plain ,HDG din985(hex nylon lock nuts)size :1/4--3",m4-m72coating :zinc ... stainless ,brassMaterial: Carbon Steel, Alloy Steel, Stainless Steel, Copper, Nylon, Plastic, etc. Our biggest strength is non-standard product according ... nuts, hex flange nuts, nylon insert lock nuts, cap nuts, slotted nuts, rivet nutWASHERS: flat washers, spring washers, lock washersSCREWS: machine ...