The MIL-DTL-38999 Series II connectors offer robust connectivity with up to 128 contacts in a sealed insert, designed for harsh environments. Featuring various mounting options like front and rear wall mount, jam nut, and box mount receptacles, they ensure secure installations. Available in 9 shell sizes and 52 insert arrangements, these connectors use M39029 rear release crimp contacts for reliable connections. Crafted from aluminum with multiple plating choices, including RoHS compliant options, they guarantee durability and conductivity. Operating between -65°C and 200°C, they meet stringent military specifications for environmental resistance, making them ideal for demanding applications.