Hellermanntyton straight cable conduit fitting brass nickel plated sc fm hellermann tyton 166 30319 the hellermanntyton 166 30319 sc50 fm pg42 is a brass connector for metallic conduit from the sc fm series the connector has a swivel external pg42 thread and comprises of two parts the shell and the body the connector has been manufactured from nickel plated brass hellermanntyton 166 30319 sc50 fm pg42 helaguard metallic conduit screw fitting