MIL-DTL-38999 Series I connectors feature up to 128 contacts in an insert, designed for harsh environments with an operating temperature range of -65 °C to 200 °C. Available in various shell sizes and insert arrangements, they offer front wall mount, rear wall mount, and jam nut receptacles, along with RFI grounding plugs. Utilizing M39029 rear release crimp contacts, these connectors are crafted from high-strength aluminum shells with plating options such as gold, electroless nickel, and cadmium finishes. Compliant with military specification MIL-DTL-38999 I, they guarantee reliability with a mating life of 500 cycles and are suitable for environment-resistant applications.