The MIL-DTL-38999 Series I connectors offer high-performance connectivity with up to 128 contacts in a rugged, environmentally sealed insert. Designed for harsh environments, they feature front and rear wall mount options, as well as jam nut receptacles for secure installations. Utilizing M39029 rear release crimp contacts, these connectors ensure reliable connections in sizes 22D, 22M, 22, 20, 16, and 8. With a wide range of plating options, including cadmium-free finishes, they meet diverse application needs. Constructed with high-strength aluminum shells, these connectors are suitable for demanding military and industrial environments, with an operating temperature range of -65 °C to 200 °C. RoHS compliant and rated for 500 mating cycles, they guarantee long-lasting performance in critical systems.