MIL-DTL-38999 Series II connectors feature up to 128 contacts housed in an insert, offering robust environmental sealing for reliable performance in harsh conditions. With an impressive operating temperature range of -65 °C to 200 °C, these connectors are designed to withstand extreme environments. Available in various configurations including front and rear wall mount, jam nut, and box mount receptacles, they cater to diverse installation needs. The connectors come in 9 shell sizes and 52 insert arrangements, utilizing M39029 rear release crimp contacts for secure connections. Crafted from durable aluminum, they are offered with different plating options such as cadmium and nickel coatings. Ensuring quality and longevity, these connectors meet stringent military specifications, making them ideal for demanding applications in the aerospace, defense, and industrial sectors.