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 mounting options including front wall, rear wall, jam nut, and box mount receptacles, these connectors offer versatility in application. With 52 insert arrangements and M39029 rear release crimp contacts in sizes 22D, 22M, 22, 20, 16, and 12, they ensure reliable connectivity. Constructed with aluminum shells and plated with options like electroless nickel and cadmium finishes, they meet stringent military specifications. Suitable for wall mounting, these connectors are ideal for use in demanding environments where durability and performance are paramount.