MIL-DTL-38999 Series I connectors feature up to 128 contacts in an insert, offering environmental sealing and a wide operating temperature range of -65 °C to 200 °C. This connector family includes front wall mount, rear wall mount, and jam nut receptacles with RFI grounding plugs, available in 9 shell sizes and 52 insert arrangements. Utilizing M39029 rear release crimp contacts in various sizes, they ensure secure connections. Constructed with high strength aluminum shells and offering multiple plating options such as electroless nickel and cadmium finishes, these connectors meet stringent military specifications. With RoHS certified cadmium-free options available, they are ideal for harsh environment applications requiring reliable performance.