The MIL-DTL-38999 Series II connectors offer high-performance connectivity with up to 128 contacts in an insert, designed for harsh environments. Featuring various mounting options like front and rear wall mount, jam nut, and box mount receptacles, they ensure secure installation. With a wide operating temperature range from -65°C to 200°C and rugged aluminum shells, these connectors are ideal for military, aerospace, and industrial applications. The included M39029 rear release crimp contacts guarantee reliable connections, while the assortment of plating options, including gold and electroless nickel, cater to diverse needs. RoHS compliant finishes are available, ensuring environmental responsibility. Trusted for their durability and conductivity, these connectors are essential for demanding environments requiring top-notch performance.