The MIL-DTL-38999 Series II connectors feature up to 128 contacts within an environmentally sealed insert, designed for harsh environments with an operating temperature range of -65 °C to 200 °C. These thin-walled connectors come in various mounting options such as front and rear wall mount, jam nut, and box mount receptacles, along with straight and 90-degree cable clamp plugs. With 52 insert arrangements and M39029 rear release crimp contacts, they offer versatility for different applications. Made of aluminum with plating options including cadmium and nickel, these connectors ensure durability and reliability. RoHS compliant finishes are also available. Suitable for military and industrial use, these connectors provide secure electrical connections in demanding conditions.