MIL-DTL-38999 Series I connectors feature up to 128 contacts in an environmentally sealed insert, designed for harsh environments with a wide 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 come in nine shell sizes with 52 insert arrangements. Utilizing M39029 rear release crimp contacts in various sizes, these connectors boast high-strength aluminum shells with plating options including cadmium-free finishes. RoHS certified, they ensure reliable performance in demanding applications.