The MIL-DTL-38999 Series I connectors offer high-performance connectivity with up to 128 contacts, designed for harsh environments. Featuring front wall mount, rear wall mount, and jam nut receptacles, they ensure secure installations. These connectors, compliant with military specification MIL-DTL-38999 I, are crafted for durability, with a wide operating temperature range from -65 °C to 200 °C. Their 9 shell sizes and 52 insert arrangements, along with M39029 rear release crimp contacts, provide versatility for various applications. Made from high-strength aluminum, they come in a range of plating options, including cadmium-free finishes for RoHS compliance. With gold-plated contact pins, they guarantee reliable conductivity, ideal for demanding environments.