The MIL-DTL-38999 Series I connectors feature a rugged design with up to 128 contacts housed in an insert, offering reliable connectivity in harsh environments. These connectors are environmentally sealed, ensuring optimal performance in a wide range of operating conditions, from -65 °C to 200 °C. Available in various shell sizes and insert arrangements, they come in front wall mount, rear wall mount, and jam nut receptacle configurations, with RFI grounding plugs for added versatility. Constructed with high-strength aluminum shells and offering multiple plating options, including RoHS certified finishes, they are ideal for military and industrial applications requiring secure and durable electrical connections.