The MIL-DTL-38999 Series I connectors offer reliable performance in harsh environments, featuring up to 128 contacts in an insert with environmental sealing. Designed for durability, they have an operating temperature range of -65 °C to 200 °C. Available in various mounting styles including front wall mount, rear wall mount, and jam nut receptacles, these connectors are suitable for a range of applications. With 52 insert arrangements and M39029 rear release crimp contacts, they provide flexibility in connectivity. Constructed with high-strength aluminum shells and offered in different plating options, including cadmium-free finishes, they meet stringent military specifications. Suitable for demanding environments, these connectors ensure secure and efficient electrical connections.