The MIL-DTL-38999 Series I connectors boast a rugged design with up to 128 contacts, offering reliable performance in harsh environments. Featuring front wall mount, rear wall mount, and jam nut receptacles, they provide versatility for various applications. These connectors, compliant with military specification MIL-DTL-38999 I, are constructed with high-strength aluminum shells and are environmentally sealed for durability. With a wide operating temperature range from -65°C to 200°C, they ensure consistent functionality in extreme conditions. Available in 9 shell sizes and 52 insert arrangements, they accommodate diverse connectivity needs. Utilizing M39029 rear release crimp contacts, these connectors guarantee secure and efficient connections. Plating options include gold, electroless nickel, and cadmium-free finishes, catering to different preferences. The connector's bayonet coupling mechanism and socket contact style further enhance their reliability. Suitable for back panel wall mounting, these connectors are ideal for demanding environments requiring high-performance connectivity solutions.