The butterfly screw is specially designed for the convenience of hand screwing operation. The butterfly design of the head increases the transverse force surface, so that the hand screwing is more efficient. It is mainly used in machinery industry, chemical industry, shipbuilding industry, construction, manufacturing industry and automobile industry.

Product material is also carbon steel, carbon steel hardening, 304, 316 stainless steel.

Our wholesale variety, round head, countersunk head, flat head, self tapping bolts and screws.

Products can also be customized according to your needs.

Large quantity Congyou, welcome to buy.