MIL-DTL-38999 Series I connectors feature up to 128 contacts in an insert, designed for harsh environments with an operating temperature range of -65°C to 200°C. Available in various configurations, including front and rear wall mount receptacles and RFI grounding plugs, they offer versatility for diverse applications. With 9 shell sizes and 52 insert arrangements, these connectors utilize M39029 rear release crimp contacts, ensuring reliable connections. Made with high-strength aluminum shells and offering a range of plating options, including cadmium-free finishes, they meet stringent military specifications for durability and performance in demanding environments.