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 YACT24JH21HNV00100
The D38999/24JH21HN is a MIL-DTL-38999 III (D38999) jam nut receptacle, designed for harsh environment applications. Featuring a composite shell with cadmium olive drab plating, this connector offers excellent durability and conductivity. With 21 gold-plated pin contacts (size 16), it ensures reliable signal transmission in extreme conditions. Rated for 7.5 A and 1250 V DC, 2300 Vrms, 900 V AC, with an operating temperature range of -65 to 200 °C (-85 to 392 °F), it is suitable for high-reliability aerospace and military systems. The triple start threaded mating type guarantees secure connections, with a mating life of 1500 cycles. RoHS non-compliant, this connector is also known by the part alias YACT24JH21HNV00100, making it a versatile and trusted choice for demanding applications.