The MIL-DTL-38999 Series I connectors offer high-performance connectivity with up to 128 contacts in an insert, designed for harsh environments with an operating temperature range from -65 °C to 200 °C. Available in various configurations including front wall mount, rear wall mount, and jam nut receptacles, these connectors feature RFI grounding plugs for enhanced signal integrity. With 9 shell sizes and 52 insert arrangements, they accommodate M39029 rear release crimp contacts in sizes 22D, 22M, 22, 20, 16, and 8, including coax and twinax options. Constructed with robust aluminum shells and offering plating choices such as cadmium and nickel, they ensure durability and reliable performance. Suitable for military and industrial applications, these connectors meet stringent MIL-DTL-38999 I standards, making them a trusted choice for demanding environments.