MIL-DTL-38999 Series I connectors feature up to 128 contacts housed in an environmentally sealed insert, designed for robust performance in harsh environments. With an operating temperature range spanning from -65°C to 200°C, these connectors offer reliable connectivity in extreme conditions. Available in various shell sizes and insert arrangements, they utilize M39029 rear release crimp contacts and come in high-strength aluminum shells with multiple plating options, including cadmium-free finishes. The connector family includes front and rear wall mount receptacles, as well as jam nut receptacles, all featuring RFI grounding plugs. Meeting military specification MIL-DTL-38999 I, these circular connectors are ideal for applications requiring durability and high performance.