770145-5 is a loose-piece socket contact for 5.0 mm Power Key Connectors (5.0 PKC), a wire-to-board connector system designed for power circuits in home appliances, particularly gas appliances. This contact is manufactured from brass with pre-tin finish and accommodates wire sizes of 20–14 AWG (0.6–2 mm²) with an insulation diameter of 0.140 inches (3.56 mm). The connector features a compact design with 19.4 mm mated height and operates at a voltage rating of 600 V AC or DC, with a UL94V-2 flammability rating. The double lock plate and protective locking lever design ensure secure contact loading and prevent wire tangling, while the housing is designed to release bubbles created during potting processes. This contact is recognized by Underwriters Laboratories (File No. E28476) and certified by Canadian Standards Association (File No. LR7189), making it suitable for demanding power distribution applications requiring reliable electrical connections.