MIL-DTL-38999 Series II connectors feature up to 128 contacts in an environmentally sealed insert, designed for harsh environments with an operating temperature range of -65 °C to 200 °C. Available in various configurations, including front and rear wall mount, jam nut, and box mount receptacles, they offer versatility for different applications. With 52 insert arrangements and M39029 rear release crimp contacts, these connectors ensure reliable performance. Constructed with aluminum shells and plated with options like electroless nickel, they meet stringent military specifications for durability and RoHS compliance. Ideal for demanding environments, these connectors provide secure and efficient electrical connections.