1986375-4 Non-Fused Terminal Block, 4 Way/Pole, Screw Down Terminals. Left hand terminal block plug connectors with a 3.81mm pitch and side wire entry. These 3.81mm left hand terminal block plug connectors are end to end stackable and have M2 rising screw clamp terminals that accept a wire size range of 30 to 14 AWG. The housings of these 3.81mm pluggable terminal block connectors are made from green PA 6.6.