MIL-DTL-38999 Series I 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 including front and rear wall mount, and jam nut receptacles, these connectors meet stringent military specifications. With 52 insert arrangements and M39029 rear release crimp contacts in sizes 22D, 22M, 22, 20, 16, and 8, they offer versatility in connectivity. Constructed with high-strength aluminum shells and offered in different plating options such as cadmium and electroless nickel, these connectors ensure reliable performance. Suitable for applications requiring RoHS compliance, they guarantee durability with a mating life of 500 cycles.