MIL-DTL-38999 III (D38999) harsh environment connectors consist of wall mount receptacles, jam nut receptacles, and straight self-locking RFI plugs. They are offered in 9 shell sizes and 54 insert arrangements, utilizing M39029 contacts in sizes 22D, 20, 16, 12, 10 power, and 8 twinax. 38999 Series 3 connectors are offered in a variety of shell materials, including aluminum, stainless steel, and lightweight composite. They are also available in a wide assortment of plating options, including olive drab cadmium, nickel, black zinc nickel, and passivated stainless steel. Selection includes RoHS-compliant, cadmium-free finishes, as well as Boeing BACC-approved designs.
Part Aliases: TE Connectivity | Deutsch YACT24MJ20SEV00100
The D38999 Series III Jam Nut Receptacle is a high-performance circular connector designed for harsh environments, meeting MIL-DTL-38999 III military specifications. With 30 gold-plated contacts, it ensures reliable conductivity in demanding applications, rated for up to 43 A and 300 V AC. Featuring a composite shell and electroless nickel plating, this connector offers exceptional durability and corrosion resistance, operating flawlessly in temperatures ranging from -65 to 200 °C. Its triple-start threaded mating type guarantees secure connections, while its female socket contact style and E-keyway polarization provide added convenience. With a service class of M and a service rating of N, this connector is ideal for use in aerospace, defense, and other high-reliability applications.