MIL-DTL-38999 Series II connectors feature up to 128 contacts within a rugged insert, designed for harsh environments with an operating temperature range of -65 °C to 200 °C. Available in various mounting options including front wall, rear wall, jam nut, and box mount receptacles, these connectors offer versatility in installation. With 52 insert arrangements and M39029 rear release crimp contacts in multiple sizes, they provide flexibility for different applications. Constructed with aluminum shells and various plating options such as gold and electroless nickel, they ensure reliable performance in demanding conditions. Meeting military specification MIL-DTL-38999 II, these connectors are ideal for applications requiring high durability and environmental resistance.