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, available in various mounting options, including front and rear wall mount, jam nut, and box mount receptacles, are crucial for military and aerospace applications. With 52 insert arrangements and M39029 rear release crimp contacts, they ensure reliable connectivity. The connectors, made of aluminum with plating options such as cadmium and nickel, offer durability and versatility. Meeting stringent military specifications, they guarantee performance and longevity in demanding scenarios. Perfect for applications requiring EMI/RFI shielding, these connectors are essential components in critical systems.