The 2-520183-4 is an Ultra-Fast Fully Insulated FASTON Receptacle from the .250 Series, supplied in strip form. It is designed to terminate a wire range of 22-18 AWG with a maximum insulation diameter of 0.135 inches. The terminal body is made from tin-plated phosphor bronze and mates with a 0.032 x 0.250 inch tab. Its one-piece housing is molded from Type 6/6 nylon, providing complete insulation to help prevent shock and short hazards in applications up to 600 volts. This receptacle is ideal for use in equipment requiring close contact spacing and a high degree of electrical safety, meeting both UL-310 and CSA C22.2 specifications.