MIL-DTL-38999 Series I connectors are designed for rugged environments, featuring up to 128 contacts in an environmentally sealed insert. With a wide operating temperature range from -65 °C to 200 °C, these connectors offer reliable performance in harsh conditions. Available in various shell sizes and insert arrangements, they accommodate M39029 rear release crimp contacts for secure connections. Constructed with high-strength aluminum shells and offering a choice of plating options, including RoHS certified finishes, they ensure durability and compatibility. The connector family includes front wall mount, rear wall mount, and jam nut receptacles, as well as RFI grounding plugs, meeting military specification MIL-DTL-38999 I for quality and performance assurance. Suitable for applications requiring reliable electrical connections in demanding environments.