The MIL-DTL-38999 Series I connectors feature a rugged design with up to 128 contacts enclosed in an environmentally sealed insert. Engineered for harsh environments, they offer reliable performance in temperatures ranging from -65°C to 200°C. This connector family includes front wall mount, rear wall mount, and jam nut receptacles, as well as RFI grounding plugs, providing versatility in installation. With 9 shell sizes and 52 insert arrangements available, they accommodate various connection needs. These connectors utilize M39029 rear release crimp contacts, ensuring secure and efficient connections. Constructed with high-strength aluminum shells and offered in different plating options, including cadmium-free finishes, they meet RoHS compliance standards. Suitable for military and industrial applications, the MIL-DTL-38999 Series I connectors are ideal for demanding environments where reliability is crucial.