The MIL-DTL-38999 Series I connectors are designed for rugged environments, featuring up to 128 contacts in an insert with environmental sealing. Operating at temperatures ranging from -65 °C to 200 °C, these connectors offer reliable performance in harsh conditions. Available in various shell sizes and insert arrangements, they utilize M39029 rear release crimp contacts for secure connections. With options for RoHS certified cadmium-free finishes, including gold plating, electroless nickel, and black anodized aluminum, these connectors ensure optimal conductivity and longevity. Suitable for military and industrial applications, they come in straight plug, front wall mount, rear wall mount, and jam nut receptacle configurations. The high-strength aluminum shells provide durability, while the bayonet coupling system facilitates easy installation. Meeting MIL-DTL-38999 I specifications, these connectors guarantee compatibility and performance in demanding settings.