MIL-DTL-38999 Series I connectors boast high performance with up to 128 contacts in an insert, meeting stringent military specifications. Designed for harsh environments, they offer environmental sealing and can operate in temperatures ranging from -65 °C to 200 °C. Available in various shell sizes and insert arrangements, these connectors feature front wall mount, rear wall mount, and jam nut receptacles, with options for RFI grounding plugs. Utilizing M39029 rear release crimp contacts, they ensure reliable connectivity in sizes 22D, 22M, 22, 20, 16, and 8 for coax and twinax applications. Crafted from high-strength aluminum, they come with plating choices such as light iridescent yellow cadmium, olive drab cadmium, electroless nickel, and black anodized aluminum, including RoHS-certified cadmium-free finishes. Suitable for demanding military and industrial settings, these connectors are ideal for back panel wall mounting applications, providing rugged and dependable electrical connections in critical operations.