MIL-DTL-38999 Series I connectors feature up to 128 contacts in an environmentally sealed insert, designed for harsh environments with an operating temperature range of -65 °C to 200 °C. Available as front wall mount, rear wall mount, and jam nut receptacles, they offer RFI grounding plugs and come in 9 shell sizes with 52 insert arrangements. Utilizing M39029 rear release crimp contacts, these connectors ensure secure connections in sizes 22D, 22M, 22, 20, 16, and 8. Constructed with high strength aluminum shells, they offer various plating options including cadmium-free finishes. With RoHS certification, they guarantee reliability in demanding applications.