MIL-DTL-38999 Series I connectors offer high-performance connectivity with up to 128 contacts in an environmentally sealed insert. Designed for harsh environments, these connectors feature front wall mount, rear wall mount, and jam nut receptacles, along with RFI grounding plugs. With 52 insert arrangements and utilizing M39029 rear release crimp contacts, they provide flexibility for various applications. Constructed of high-strength aluminum with plating options including cadmium, electroless nickel, and anodized aluminum, they ensure durability and reliability. RoHS compliant finishes are available, making them suitable for diverse industrial needs. Operating between -65°C and 200°C, these connectors are ideal for demanding environments where performance is crucial.