MIL-DTL-38999/20 - Connectors, Electrical, Circular, Receptacle, Threaded, Wall Mounting Flange, Removable Crimp Contacts, Series III. This high-reliability connector features a composite shell with Electroless Nickel and Electrodeposited Nickel finish coating, providing excellent durability in harsh environments. With a contact layout of 12(11) size 12 removable crimp contacts, it ensures secure and efficient electrical connections. Designed for military applications, it offers a wide operating temperature range from -65°C to 200°C. The socket contact style and D keyway polarization further enhance its performance and reliability. This connector is not RoHS-compliant.