The MIL-DTL-38999 Series I connectors offer rugged reliability in harsh environments, featuring up to 128 contacts within their inserts. Designed for durability, these connectors are environmentally sealed and can operate within a wide temperature range from -65 °C to 200 °C. Available in various configurations such as front wall mount, rear wall mount, and jam nut receptacles, they provide flexibility for different applications. With 52 insert arrangements and M39029 rear release crimp contacts, they ensure secure connections. The connectors come in high-strength aluminum shells with multiple plating options, including cadmium-free finishes for RoHS compliance. Suitable for military and industrial use, they guarantee longevity with a mating life of 500 cycles.