Wurth WR-TBL 351 Series 5.08mm Pitch Vertical Terminal Block Plug Connectors WR-TBL 351 series 5.08mm pitch vertical cable mount terminal block plug connectors with female sockets and a 'slot' type M3 screw terminal that accepts a wire size of AWG 24-12. These WR-TBL 351 series 5.08 mm pluggable terminal block cable mount connectors are made from green UL94-V0 PA66, have a tin plated phosphor bronze wire guard and have latches on the non-wire side.