MIL-DTL-38999 Series I connectors offer exceptional performance in harsh environments, featuring up to 128 contacts in an environmentally sealed insert. With an operating temperature range from -65 °C to 200 °C, these connectors are highly versatile. Available in various shell sizes and insert arrangements, they utilize M39029 rear release crimp contacts for reliable connectivity. Constructed with high-strength aluminum shells and offering multiple plating options, including RoHS-certified finishes, these connectors ensure durability and compliance. Perfect for military and aerospace applications, they come in different mounting styles, including front wall mount, rear wall mount, and jam nut receptacles, with RFI grounding plugs. Suitable for straight plug installation, these connectors have gold-plated contacts for optimal conductivity and a keyway polarization of N. Designed for 500 mating cycles, they guarantee long-term performance in demanding environments.