MIL-DTL-38999 Series I connectors feature up to 128 contacts in an insert, designed for harsh environments with an operating range of -65°C to 200°C. Available in front wall mount, rear wall mount, and jam nut receptacles, they offer RFI grounding plugs and come in 9 shell sizes and 52 insert arrangements. Utilizing M39029 rear release crimp contacts, they ensure reliable connectivity in sizes 22D, 22M, 22, 20, 16, and 8 (coax and twinax). Constructed with high-strength aluminum shells and offering various plating options, including cadmium-free finishes, these connectors meet stringent military specifications for performance and durability.