... request 2.ISO9001:2008 & RoHs 3.Material:Brass,Carton steel,Stainless steel,Alloy Specifications1. Item# ... by componentsBolts, Screw bolts/Studs, Nuts, Tapping screws, Wooden screws, Washers/Gaskets, Check rings, Pins, Rivets and ... etc.2. by head typesFlat, Oval, Binding, Pan, Round, Truss, Button, PF, Pan washer, Cheese, Countersunk, Fillister ... .www.jielimetal.com.cn Custom Brass Round Nut JL-SCR-026