The 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. Available in various mounting options like front wall mount, rear wall mount, and jam nut receptacles, they offer versatility in installation. With multiple shell sizes and insert arrangements, they accommodate M39029 rear release crimp contacts in sizes 22D, 22M, 22, 20, 16, and 12. Constructed with aluminum shells and offering plating options such as cadmium and nickel, they ensure durability and reliable performance. These connectors, compliant with MIL-DTL-38999 II specifications, are ideal for military and aerospace applications requiring high-quality, environmentally sealed connectivity.