Wurth WR-TBL 1031 Series 3.5mm Horizontal Entry Modular Terminal Block Connectors WR-TBL 1031 series 3.5mm pitch PCB terminal block connectors with a horizontal wire entry. These 1031 series 3.5mm pitch PCB terminal blocks use a 'slot' type M2 screw terminal which accepts a wire size of AWG 26-16 and have a stainless steel wire guard. The body of these 3.5mm WR-TBL modular terminal blocks is made from blue UL94-V0 PA66 and the contacts are tin plated.