The MIL-DTL-38999 Series II connectors are designed for harsh environments, with up to 128 contacts sealed for protection. Operating between -65 °C and 200 °C, these connectors come in various configurations including front and rear wall mount, jam nut, and box mount receptacles. Available in 9 shell sizes and 52 insert arrangements, they use M39029 rear release crimp contacts in sizes 22D, 22M, 22, 20, 16, and 12. Made of aluminum with plating options such as cadmium and nickel, they ensure durability and reliability. Perfect for military and industrial applications requiring secure electrical connections in challenging conditions.