206516-1 is a reverse numbering plug from the CPC Series 1 circular plastic connector family, designed for commercial signal and power applications. This plug features an 11-4 arrangement with 4 positions and accepts socket contacts, utilizing a 5/8-24 UNEF-2A thread size for secure mating. Key dimensions include A max of 1.209 inches (30.71 mm), B of 0.687 inches (17.45 mm), and panel cutout dimensions E of 1.125 inches (28.58 mm). The connector operates over a temperature range of -40°C to +105°C and is made of UL 94V-0 rated, self-extinguishing thermoplastic material. It is RoHS compliant and mates with feed-thru receptacle 206518-2, making it suitable for pressure bulkhead feed-thru and sealed applications.