The 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, these connectors offer front wall mount, rear wall mount, and jam nut receptacles with RFI grounding plugs. Constructed with high-strength aluminum shells, they come in a range of plating options, including cadmium-free finishes. Utilizing M39029 rear release crimp contacts, these connectors ensure reliable connectivity, making them ideal for military and aerospace applications that demand durability and performance in challenging conditions.