Hellermanntyton straight cable conduit fitting brass nickel plated sc fm hellermann tyton 166 30308 the hellermanntyton 166 30308 sc10 fm m50 is a brass connector for metallic conduit from the sc fm series the connector has a swivel external m50 thread and comprises of two parts the shell and the body the connector has been manufactured from nickel plated brass hellermanntyton 166 30308 sc50 fm m50 helaguard metallic conduit screw fitting