The MIL-DTL-38999 Series I connectors are designed for demanding environments, offering up to 128 contacts in an insert for secure connectivity. With an operating temperature range from -65 °C to 200 °C, these connectors are built to withstand extreme conditions. Featuring various mounting options such as front wall mount, rear wall mount, and jam nut receptacles, they provide flexibility in installation. The connectors utilize M39029 rear release crimp contacts in sizes 22D, 22M, 22, 20, 16, and 8, including coax and twinax variants. Constructed with high-strength aluminum shells and offering plating options like electroless nickel and cadmium finishes, they ensure durability and reliable performance. RoHS certified cadmium-free options are available, meeting environmental standards. Perfect for military and industrial applications, the MIL-DTL-38999 Series I connectors deliver secure and efficient electrical connections in harsh environments.