MIL-DTL-38999 Series I connectors are designed for harsh environments, featuring up to 128 contacts in an insert that is environmentally sealed for reliable performance. 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 shell sizes and insert arrangements, they utilize M39029 rear release crimp contacts for secure connections. The high strength aluminum shells come in different plating options, including cadmium-free finishes for RoHS compliance. Offering front wall mount, rear wall mount, and jam nut receptacles, as well as RFI grounding plugs, these connectors ensure versatility in installation. With a bayonet coupling and gold contact plating, they guarantee a durable and conductive connection, making them ideal for military and industrial use.