MIL-DTL-38999 Series II connectors feature up to 128 contacts in an insert, designed for harsh environments with a wide operating temperature range of -65 °C to 200 °C. These connectors, with various mounting options including front and rear wall mount, jam nut, and box mount receptacles, offer versatility in connectivity solutions. Available in 9 shell sizes and 52 insert arrangements, they utilize M39029 rear release crimp contacts for reliable performance. The aluminum shells come with multiple plating options, including RoHS compliant finishes, ensuring durability and environmental compliance. Perfect for military and industrial applications, these connectors provide secure, high-quality electrical connections in demanding conditions.