MIL-DTL-38999 Series I connectors feature up to 128 contacts in an insert, designed for harsh environments with an operating temperature range of -65 °C to 200 °C. Available in various shell sizes and insert arrangements, these connectors offer front wall mount, rear wall mount, and jam nut receptacles, along with RFI grounding plugs. Constructed with high-strength aluminum shells, they come with multiple plating options such as cadmium and nickel, including RoHS-certified finishes. Utilizing M39029 rear release crimp contacts, they ensure reliable connectivity with male pin contact style. Meeting military specification MIL-DTL-38999 I, these circular connectors are ideal for applications requiring environmental resistance and durability.