1.Standard and non-standard 2.ISO9001:2008&RoHS 3.Materials:brass ... . by components Bolts, Screw bolts/Studs, Nuts, Tapping screws, Wooden screws, Washers/Gaskets, Check rings, Pins, Rivets and etc ... Standards: JIS, ANSI, DIN, GB, ASME, BSW Non-standard fastener orders are welcomed!Our fastener products are wildly used ... and good service.www.jielimetal.com.cn Non Standard Screws and Fasteners JL-SCR-004