Galvanised steel HEX locknut or locking nut for Bosal conduit / tubing male adaptor. Available for use with 20mm, 25mm and 50mm Bosal tubing male adaptors. Although Bosal conduit is mainly used during electrical installations, it is widely used in many other applications. It is ideal for providing protection to electrical, surveillance camera and fibre cable installations. Usually two locking nuts are used per male adaptor. Priced per HEX lock nut.