MIL-DTL-38999 Series I connectors feature up to 128 contacts housed in an environmentally sealed insert, designed for rugged applications with an operating temperature range of -65 °C to 200 °C. Available in various mounting options including front wall, rear wall, and jam nut receptacles, these connectors are ideal for harsh environments. With 52 insert arrangements and M39029 rear release crimp contacts, they offer versatility in connectivity. Constructed with high strength aluminum shells and multiple plating options such as cadmium and nickel, these connectors ensure durability and reliable performance. RoHS compliant finishes are also available, making them suitable for a wide range of applications.