Nut is a part that connects mechanical equipment closely, also called root nut, lock nut or receiver. The main purpose is to lock the external joint or other pipe fittings of the thread.

Hexagon socket set screw, hexagon flat set screw, hexagon cylindrical set screw.

As we all know, nuts and bolts are small parts that play the role of fastening and connecting when fixing tools, with the characteristics of easy installation, integrity, no washer, easy disassembly and so on. Generally used as nut materials are carbon steel, stainless steel, copper, alloy, etc. Among many kinds of nuts, butterfly nut is very convenient to use because of its unique shape - the but