... per customers' requirement size :1/4--3/4",m4-m14 square head bolts standard: JIS ,ASTM,DIN ,BS or per customers' ... hex nuts, 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, hex socket head cap screws, woodscrews, self drilling ...