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 shell sizes and insert arrangements, these connectors come in high-strength aluminum shells with options for plating, including cadmium-free finishes. Offering front wall mount, rear wall mount, and jam nut receptacles with RFI grounding plugs, they utilize M39029 rear release crimp contacts in sizes 22D, 22M, 22, 20, 16, and 8. Suitable for military applications, these connectors are environmentally sealed and meet stringent standards for performance and durability.