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 configurations like wall mount, jam nut receptacles, and RFI grounding plugs, they offer versatility. With 9 shell sizes and 52 insert arrangements, these connectors utilize M39029 rear release crimp contacts, ensuring secure connections. Constructed with high-strength aluminum shells and offering multiple plating options, including RoHS certified finishes, they provide durability and reliability. Perfect for military and industrial applications, these circular connectors guarantee optimal performance in demanding conditions.