MIL-DTL-38999 Series II connectors are designed for rugged environments, featuring up to 128 contacts in a sealed insert. With a wide operating temperature range of -65 °C to 200 °C, these connectors are suitable for harsh conditions. Available in various mounting styles, including front and rear wall mount, jam nut, and box mount receptacles, they offer versatility in installation. The connectors come in 9 shell sizes and 52 insert arrangements, accommodating M39029 rear release crimp contacts. Constructed with aluminum shells and offered in different plating options such as cadmium and nickel, they ensure durability and reliability. Meeting military specification MIL-DTL-38999 II, these connectors are ideal for applications requiring secure and high-performance electrical connections.