MIL-DTL-38999 Series I connectors are designed for harsh environments, featuring up to 128 contacts within an insert for reliable connectivity. These connectors are environmentally sealed, with an impressive operating temperature range of -65 °C to 200 °C. Available in various mounting options such as front wall, rear wall, and jam nut receptacles, they offer versatility in installation. With 52 insert arrangements and M39029 rear release crimp contacts in different sizes, these connectors ensure secure connections. Constructed with high-strength aluminum shells and offering plating options like electroless nickel and cadmium finishes, they are built to withstand tough conditions. RoHS certified options are also available, making them suitable for a range of applications requiring durability and reliability.