The MIL-DTL-38999 Series II connectors feature up to 128 contacts in an 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, these connectors ensure reliable performance. With 52 insert arrangements and M39029 rear release crimp contacts, they offer versatility in connection options. Constructed with aluminum shells and plated in options like electroless nickel, they provide durability and protection. Compliant with military specifications, these connectors are ideal for applications requiring rugged and secure electrical connections.