MIL-DTL-38999 Series I connectors boast rugged construction and high performance, offering up to 128 contacts in an environmentally sealed insert. Designed for harsh environments, these connectors feature front and rear wall mount options, as well as jam nut receptacles, all meeting stringent military specifications. With a wide operating temperature range from -65 °C to 200 °C, they ensure reliability in extreme conditions. Utilizing M39029 rear release crimp contacts in various sizes, including coax and twinax, they provide flexibility for diverse applications. The high strength aluminum shells come in multiple plating options, including RoHS compliant finishes, catering to specific needs. Suitable for demanding environments, these connectors guarantee secure and efficient electrical connections.