RS 3.5mm Vertical Mount Screwless Push-Fit Terminal Block Plug Connectors Vertical cable mount screwless terminal block plug connectors with a 3.5mm pitch and a 300 V 8 A electrical rating. These 3.5mm cable mount pluggable screwless terminal blocks have push-fit terminals that accept a wire size range of 28 to 16 AWG and PA66 housings.