MIL-DTL-38999 Series I connectors offer reliable connectivity in harsh environments, featuring up to 128 contacts within an environmentally sealed insert. With an operating temperature range spanning -65°C to 200°C, these connectors are designed for durability. Available in various mounting options including front wall mount, rear wall mount, and jam nut receptacles, they cater to diverse applications. The connectors come in 9 shell sizes and 52 insert arrangements, utilizing M39029 rear release crimp contacts in multiple sizes. Constructed with high-strength aluminum shells, they are offered in a range of plating options, from cadmium finishes to RoHS-certified alternatives. Suitable for military and industrial use, MIL-DTL-38999 Series I connectors ensure secure and efficient electrical connections in demanding settings.