1. ISO9001:2008;RoHS;Heavy Element 2. Price:starting at $0.001 3. MOQ:1000 4. Delivery:15-30days 5. Nice after-sale service Specification1.Thread type: machine thread, triangle thread, metric thread, tapping thread, drilling thread, half thread, full thread etc.2.Head type: Hexagon head, Mushroom head, Pan head, Countersunk head,Bugle head, Oval head, Hex flange head, Button head,Triangular head ...