spec :spring lock washer size :m3--m64 material :Carbon Steel, Alloy Steel, Stainless Steel spec :spring lock washersize :m4--m64material :Carbon Steel, Alloy Steel ... nutWASHERS: flat washers, spring washers, lock washersSCREWS: machine screws, self tapping screws, set screws, hex socket head cap screws, wood screws, self drilling screwsChain and cable ...