The MIL-DTL-38999 Series I connectors feature up to 128 contacts housed in an environmentally sealed insert, designed for rugged use in harsh environments. With an operating temperature range of -65 °C to 200 °C, they offer reliable performance in extreme conditions. Available in various shell sizes and insert arrangements, these connectors come in high strength aluminum shells with a choice of plating options, including cadmium-free finishes. The connector family includes front and rear wall mount, as well as jam nut receptacles, along with RFI grounding plugs. Utilizing M39029 rear release crimp contacts, they ensure secure connections in military and aerospace applications. The connector's bayonet coupling system and removable crimp contacts make them easy to install and maintain. With their durable construction and wide temperature tolerance, MIL-DTL-38999 Series I connectors are ideal for critical operations where reliability is paramount.