MIL-DTL-38999 Series I connectors offer robust connectivity with up to 128 contacts in an insert, designed for harsh environments with an operating temperature range of -65 °C to 200 °C. Featuring front wall mount, rear wall mount, and jam nut receptacles, they ensure secure installations. With 52 insert arrangements and M39029 rear release crimp contacts, these connectors provide versatility for various applications. Constructed with high-strength aluminum shells and available in different plating options including cadmium-free finishes, they guarantee durability and reliability. Ideal for military and industrial use, these connectors meet stringent environmental standards.