The MIL-DTL-38999 Series I connectors are designed for harsh environments, featuring up to 128 contacts housed in an insert for reliable connectivity. With an operating temperature range spanning from -65°C to 200°C, these connectors are environmentally sealed for optimal performance. Available in various shell sizes and insert arrangements, they offer versatility in applications. Constructed with high-strength aluminum shells and offering multiple plating options, including RoHS-certified finishes, they ensure durability and compliance. The connectors come in different mounting styles, such as front wall mount, rear wall mount, and jam nut receptacles, catering to diverse installation needs. Utilizing M39029 rear release crimp contacts in various sizes, they guarantee secure connections. Overall, the MIL-DTL-38999 Series I connectors provide reliable and rugged electrical solutions for demanding military and industrial environments.