MIL-DTL-38999 Series I connectors feature up to 128 contacts in an environmentally sealed insert, ideal for harsh environments with an operating temperature range of -65 °C to 200 °C. Available in various mounting options including front wall, rear wall, and jam nut receptacles, these connectors meet stringent military specifications. With 9 shell sizes and 52 insert arrangements, they use M39029 rear release crimp contacts in sizes 22D, 22M, 22, 20, 16, and 8. Crafted from high-strength aluminum, they are offered in multiple plating options such as cadmium and nickel finishes. RoHS compliant alternatives are also available. Designed for reliability, these connectors are suitable for demanding applications requiring rugged performance in connectivity.