... :m3--m64 material :Carbon Steel, Alloy Steel, Stainless Steel spec :spring lock washersize :m4--m64material :Carbon Steel, Alloy Steel, Stainless Steel ... nuts, cap nuts, slotted nuts, rivet nutWASHERS: flat washers, spring washers, lock washersSCREWS: machine screws, self tapping screws, set screws ... screws, self drilling screwsChain and cable Welcome you inquiry, pls contact me Jane :0086-136-0181-1