Also known as hexagonal concave end machine, belongs to fastener products. It has no head, positive inner hexagon groove and concave end at the tail of the screw. It needs to be installed and used wit
Flat end set screw, also known as machine screw, set screw, head end is flat end.
The hexagon tip fixing screw is also called the hexagonal cone end machine meter or top screw, which belongs to the connecting part product. The socket with no head and socket is installed and used wi
The inner hexagon point set screw, also known as the inner hexagon cone end machine meter or top screw, belongs to the connector product. Headless, hexagonal groove, with the size of the hexagon wrenc