MIL-DTL-38999 Series I connectors offer exceptional performance in harsh environments, boasting up to 128 contacts housed within a robust insert. With front wall mount, rear wall mount, and jam nut receptacles, as well as RFI grounding plugs, these connectors ensure secure and reliable connections. Featuring M39029 rear release crimp contacts in various sizes, they accommodate a wide range of applications. Built to withstand extreme temperatures ranging from -65 °C to 200 °C, they are ideal for demanding military and industrial settings. Available in nine shell sizes and 52 insert arrangements, with options for RoHS compliant finishes, these connectors provide versatility and durability. With high strength aluminum shells and various plating options such as electroless nickel and cadmium, they offer excellent corrosion resistance. Suitable for both wall and jam nut mounting, these connectors are designed for long-lasting performance in challenging conditions.