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, alongside RFI grounding plugs. Utilizing M39029 rear release crimp contacts, these connectors come in high strength aluminum shells with plating options such as electroless nickel and cadmium finishes. RoHS certified options are also available. Suitable for military and industrial applications, they ensure reliable connectivity with a mating life of 500 cycles.