MIL-DTL-38999 Series I connectors feature up to 128 contacts in a sealed 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 and rear wall mount options, as well as jam nut receptacles with RFI grounding plugs. Utilizing M39029 rear release crimp contacts, they ensure secure and reliable connections. Constructed with high-strength aluminum shells, they come in different plating options, including cadmium-free finishes. Meeting military specification MIL-DTL-38999 I, these circular connectors are ideal for applications requiring durability and performance in demanding conditions.