MIL-DTL-38999 Series II connectors feature up to 128 contacts in an environmentally sealed insert, designed for harsh environments with an operating temperature range of -65°C to 200°C. Available in various mounting options such as front and rear wall mount, jam nut, and box mount receptacles, they offer versatility in installation. These connectors come in 9 shell sizes and 52 insert arrangements, using M39029 rear release crimp contacts for secure connections. Constructed with aluminum shells and offering plating options like cadmium and nickel, they ensure durability and reliability. With RoHS compliant finishes, including cadmium-free options, these connectors meet stringent environmental standards. Perfect for military and industrial applications, they guarantee high-performance connectivity in demanding conditions.