MIL-DTL-38999 Series I connectors are designed for harsh environments, boasting up to 128 contacts in an insert. These circular plugs feature front wall mount, rear wall mount, and jam nut receptacles with RFI grounding plugs. With a wide operating temperature range of -65 °C to 200 °C, they are ideal for military applications. Available in 9 shell sizes and 52 insert arrangements, they utilize M39029 rear release crimp contacts in various sizes. The connectors come in high-strength aluminum shells with plating options like cadmium and nickel. RoHS certified finishes are also available. With a focus on durability and reliability, these connectors are perfect for demanding environments.