520212-1 is a loose-piece FASTON housing receptacle designed to accept 187 Series FASTON terminals. Constructed from nylon material with a V2 flammability rating per UL 94, this housing is finished in natural color and features an insulation diameter maximum of 0.170 inches (4.32 mm). The housing dimensions are 1.655 inches length (42.04 mm), 0.845 inches width (21.46 mm), 0.317 inches thickness (8.05 mm), and 0.875 inches height (22.23 mm). This receptacle housing is commonly used in appliance connectors, door interlock switches, and other electrical applications requiring reliable terminal connections with flame-retardant properties.