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 front wall mount, rear wall mount, and jam nut receptacles, they offer RFI grounding plugs and utilize M39029 rear release crimp contacts. With options for 9 shell sizes and 52 insert arrangements, these connectors come in high strength aluminum shells with various plating choices, including RoHS certified finishes. Suitable for military and industrial applications, they ensure reliable connectivity in demanding settings.