The MIL-DTL-38999 Series I connectors offer a rugged solution with up to 128 contacts in an insert, designed for harsh environments. These environmentally sealed connectors feature front wall mount, rear wall mount, and jam nut receptacles, along with RFI grounding plugs, catering to various installation needs. Compliant with military specification MIL-DTL-38999 I, they ensure reliable performance in extreme conditions, with an operating temperature range of -65 °C to 200 °C. Available in 9 shell sizes and 52 insert arrangements, they utilize M39029 rear release crimp contacts, providing secure connections. Constructed with high-strength aluminum shells and offering multiple plating options, including RoHS-certified finishes, these connectors guarantee durability and versatility in demanding applications.