The MIL-DTL-38999 Series I connectors offer a reliable solution for harsh environments, featuring up to 128 contacts in an environmentally sealed insert. Designed for durability, these connectors have an operating temperature range of -65 °C to 200 °C. Available in various shell sizes and insert arrangements, they accommodate M39029 rear release crimp contacts in sizes 22D, 22M, 22, 20, 16, and 8. With options for front wall mount, rear wall mount, and jam nut receptacles, as well as RFI grounding plugs, they provide versatility in applications. Constructed with high-strength aluminum shells and offered in plating options like cadmium and electroless nickel, these connectors ensure reliable performance. Suitable for military and industrial use, they meet stringent quality standards, including RoHS compliance.