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 with RFI grounding plugs. Utilizing M39029 rear release crimp contacts, these connectors come in high-strength aluminum shells with plating options such as cadmium and nickel. Ideal for military and aerospace applications, they ensure reliable performance with RoHS compliant finishes.