Hellermanntyton brass conduit connector sc sm series hellermann tyton 166 30413 the hellermanntyton 166 30413 sc20 sm pg13 is a brass connector for metallic conduit from the sc sm series the connector has a swivel external pg13 thread and comprises of two parts the shell and the body the connectors have been nickel plated hellermanntyton 166 30413 sc20 sm pg13 brass conduit connector pg13 169mm