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 for added versatility. With 9 shell sizes and 52 insert arrangements using M39029 rear release crimp contacts, these connectors ensure secure and reliable connections. Constructed with high strength aluminum shells and a variety of plating options, including RoHS certified finishes, they are suitable for a wide range of applications.