MIL-DTL-38999 Series I connectors feature up to 128 contacts in an insert, offering environmental sealing and a wide operating temperature range from -65 °C to 200 °C. This harsh environment 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, they are designed for durability, with high strength aluminum shells and various plating options such as cadmium and nickel. RoHS-certified finishes are also available. Ideal for military and industrial applications, these connectors provide reliable performance in demanding environments.