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. These connectors offer various mounting options including front and rear wall mount, jam nut, and box mount receptacles. Available in 9 shell sizes and 52 insert arrangements, they utilize M39029 rear release crimp contacts. Constructed with aluminum shells and offering multiple plating options, they ensure durability and reliability. These connectors, compliant with MIL-DTL-38999 II specifications, are ideal for military and aerospace applications requiring secure and high-performance electrical connections in rugged conditions.