The MIL-DTL-38999 Series I connectors offer high-performance connectivity in harsh environments, featuring up to 128 contacts within an environmentally sealed insert. With an operating temperature range spanning from -65 °C to 200 °C, these connectors are suitable for a wide range of applications. Available in various mounting options including front wall mount, rear wall mount, and jam nut receptacles, they provide flexibility in installation. Designed for durability, they come in high strength aluminum shells with multiple plating options such as electroless nickel and cadmium finishes. Incorporating M39029 rear release crimp contacts, these connectors ensure reliable connections. Their bayonet coupling mechanism and RoHS compliant finishes make them ideal for military, aerospace, and industrial use where rugged performance is essential.