MIL-DTL-38999 Series II connectors offer high-performance connectivity with up to 128 contacts and robust environmental sealing, ensuring reliable operation in harsh conditions. Designed for versatility, these connectors come in various mounting options such as front and rear wall mount, jam nut, and box mount receptacles. Featuring a range of shell sizes and insert arrangements, they accommodate M39029 rear release crimp contacts in sizes 22D, 22M, 22, 20, 16, and 12. The connectors, made of durable aluminum, are available with plating options including electroless nickel and cadmium finishes, meeting RoHS compliance standards. With a wide operating temperature range from -65 °C to 200 °C and a mating life of 500 cycles, they are ideal for demanding applications that require reliable electrical connections in challenging environments.