The 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 mount types including front wall, rear wall, and jam nut receptacles, they offer reliable RFI grounding. With 9 shell sizes and 52 insert arrangements, these connectors use M39029 rear release crimp contacts in sizes 22D, 22M, 22, 20, 16, and 8 for versatility. Constructed with high-strength aluminum shells and offering a selection of plating options including cadmium-free finishes, these connectors meet stringent military specifications for durability and performance. Perfect for applications requiring secure electrical connections in challenging conditions.