The MIL-DTL-38999 Series I connectors feature up to 128 contacts housed 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, they offer versatility with front wall mount, rear wall mount, and jam nut receptacles, along with RFI grounding plugs. Constructed with high-strength aluminum shells, these connectors come with multiple plating options including cadmium-free finishes. Utilizing M39029 rear release crimp contacts, they ensure secure and reliable connections. Meeting military specification MIL-DTL-38999 I, these circular plugs are ideal for demanding applications requiring durability and environmental resistance.