The MIL-DTL-38999 Series I connectors are designed for harsh environments, with up to 128 contacts sealed within an insert. Operating in temperatures ranging from -65 °C to 200 °C, these connectors offer durability and reliability. Featuring various mounting options such as front wall, rear wall, and jam nut receptacles, they provide versatility for different applications. Utilizing M39029 rear release crimp contacts in multiple sizes, including coax and twinax, these connectors ensure secure connections. With a selection of plating options like electroless nickel and cadmium finishes, they cater to specific environmental requirements. RoHS certified options are available for those needing cadmium-free finishes. Made with high-strength aluminum shells, these connectors guarantee longevity and performance. Suitable for military and industrial use, they meet stringent MIL-DTL-38999 I specifications, offering a trusted solution for demanding connectivity needs.