Hellermanntyton metallic conduit fittiings with metallic overbraid pcsb fm hellermann tyton 166 33806 the hellermanntyton 166 33806 pcsb40 is a conduit fitting with an m40 fixed external thread for metallic conduit from the pcsb fm series the fitting comprises of two parts the shell and the body the connector has been manufactured from nickel plated brass hellermanntyton 166 33806 pcsb40 fm m40 conduit fitting ip54 m40 376mm