MIL-DTL-38999 Series I connectors offer high-performance connectivity with up to 128 contacts, suitable for harsh environments. Featuring front and rear wall mount options, as well as jam nut receptacles, they are designed for durability. With an operating temperature range of -65 °C to 200 °C, these connectors are environmentally sealed for reliable performance. Utilizing M39029 rear release crimp contacts, they ensure secure connections in a variety of applications. Available in different shell sizes and insert arrangements, with plating options including electroless nickel and cadmium finishes, these connectors meet stringent military specifications. Their rugged aluminum shells, gold-plated contact pins, and conductivity make them ideal for demanding environments. Whether for box or bulkhead mounting, they offer a service class rating of E. For RoHS compliance, cadmium-free finishes are also available, providing a versatile solution for diverse connectivity needs.