... and standards upon request 2.ISO9001:2008 & RoHs 3.Material:Brass,Carton steel,Stainless steel,Alloy Specifications1. Item# JL-SCR-026 ... , Rivets and etc.2. by head typesFlat, Oval, Binding, Pan, Round, Truss, Button, PF, Pan washer, Cheese, Countersunk, Fillister, hexagon, Hexagon ... are suitable for your products.www.jielimetal.com.cn Custom Brass Round Nut JL-SCR-026