The 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. Offering various mounting options like front and rear wall mount, jam nut, and box mount receptacles, along with straight and 90-degree cable clamp plugs, they provide versatile connectivity solutions. With 52 insert arrangements using M39029 rear release crimp contacts, these connectors ensure secure and reliable connections. Constructed with aluminum shells and available in different plating options, including RoHS-certified finishes, they guarantee durability and compliance. Ideal for military and aerospace applications, these connectors meet stringent performance standards for environmental resistance and conductivity, making them essential components in demanding operating conditions.