MIL-DTL-38999 Series I connectors are designed for harsh environments, featuring up to 128 contacts in an environmentally sealed insert. With an operating temperature range from -65 °C to 200 °C, they offer reliability in extreme conditions. Available in various mounting options, including front wall, rear wall, and jam nut receptacles, these connectors ensure secure connections. Utilizing M39029 rear release crimp contacts, they come in 9 shell sizes and 52 insert arrangements. Constructed with high-strength aluminum shells and offered in different plating options, such as cadmium and nickel, they meet diverse application requirements. The RoHS compliant versions provide environmentally friendly alternatives. Ideal for military and industrial applications, these connectors guarantee durability and performance.