Hellermanntyton brass conduit connector sc sm series hellermann tyton 166 30400 the hellermanntyton 166 30400 sc10 sm m12 is a brass connector for metallic conduit from the sc sm series the connector has a swivel external m12 thread and comprises of two parts the shell and the body the connectors have been nickel plated hellermanntyton 166 30400 sc10 sm m12 brass conduit connector m12 68mm