The MIL-DTL-38999 Series II connectors offer reliable performance in harsh environments with up to 128 contacts sealed for protection. Operating between -65 °C and 200 °C, these connectors feature various mounting options such as 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 for secure connections. Constructed with aluminum shells and offering plating options including cadmium-free finishes, these connectors are ideal for military and industrial applications requiring durability and high performance in challenging conditions.