... :stainless steel 2.Shape:star lock washer 3.Tolerance:+/-0.05mm 4.We make standard and non-standard washer Specifications1. Item# JL-SCR ... , Binding, Pan, Round, Truss, Button, PF, Pan washer, Cheese, Countersunk, Fillister, hexagon, Hexagon washer head, Hexagon socket button head and etc.3 ... are suitable for your productswww.jielimetal.com.cn Type of Lock Washer JL-SCR-021