206151-4 is a free-hanging circular connector receptacle from the AMP CPC (Circular Plastic Connector) Series 1, designed for commercial signal and power applications. This standard sex receptacle features a shell size 23 with 37 positions (arrangement 23-37) and includes a pre-installed bonded peripheral seal for sealing/splash-proof applications or environments subjected to vibration. The connector is constructed from UL 94V-0 rated, stabilized, heat-resistant, self-extinguishing thermoplastic material with an operating temperature range of -40°C to +105°C. Key dimensions include C: 1.733 inches (44.02 mm) and D: 1.505 inches (38.23 mm), with thread size 1-3/8-18 UNEF-2A. This receptacle mates with plug part number 206150-1 and is ideal for applications requiring quick connect/disconnect capability with reliable environmental protection.