The MIL-DTL-38999 Series I connectors offer exceptional performance in harsh environments, featuring up to 128 contacts in an environmentally sealed insert. With an operating temperature range from -65 °C to 200 °C, these connectors are highly durable and reliable. Available in various shell sizes and insert arrangements, they accommodate M39029 rear release crimp contacts for secure connections. Constructed with high strength aluminum shells and offering multiple plating options, including RoHS certified finishes, these connectors ensure long-lasting functionality. The Series I connectors, with options for front wall mount, rear wall mount, and jam nut receptacles, are ideal for military and industrial applications requiring rugged connectivity.