... Washers/Gaskets, Check rings, Pins, Rivets and etc. 2. by head types Flat, Oval, Binding, Pan, Round, Truss, Button, PF ... washer, Cheese, Countersunk, Fillister, hexagon, Hexagon washer head, Hexagon socket button head and etc. 3. by type of drive inserts Phillilps ... RoHs compliance,Standards: JIS, ANSI, DIN, GB, ASME, BSW Non-standard fastener orders are welcomed!Our fastener products are wildly used ...