MIL-DTL-38999 Series I connectors are designed for demanding environments, featuring up to 128 contacts in an environmentally sealed insert. With an operating temperature range of -65 °C to 200 °C, these connectors ensure reliable performance in extreme conditions. Available in various shell sizes and insert arrangements, they offer versatility for different applications. Constructed with high-strength aluminum shells and a range of plating options, including cadmium-free finishes, they provide durability and corrosion resistance. The connector family includes front wall mount, rear wall mount, and jam nut receptacles, along with RFI grounding plugs, catering to diverse mounting needs. Utilizing M39029 rear release crimp contacts, they offer secure and efficient connectivity. RoHS compliant options are available, meeting environmental standards. Ideal for military and industrial applications, these connectors guarantee high performance and longevity in harsh environments.