Hellermanntyton fittings for metallic conduit and metallic overbraid scsb fm hellermann tyton 166 34609 the hellermanntyton 166 34609 scsb12 is a metallic conduit connector with a fixed external thread from the scsb fm series the fitting comprises of two parts the shell and the body the pg16 connector has been manufactured from nickel plated brass hellermanntyton 166 34609 scsb20 fm pg16 conduit fitting pg16 169mm