MIL-DTL-38999 Series I connectors feature up to 128 contacts in an insert, providing robust environmental sealing for a wide range of applications. With an operating temperature spanning from -65 °C to 200 °C, these connectors are designed for harsh environments. Available in various shell sizes and insert arrangements, they offer versatility in connectivity solutions. The connector family includes front wall mount, rear wall mount, and jam nut receptacles, along with RFI grounding plugs, ensuring secure installations. Utilizing M39029 rear release crimp contacts, they offer reliable performance, with contact plating options including gold for enhanced conductivity. The high strength aluminum shells come in a variety of plating options, catering to different application needs. With RoHS certified cadmium-free finishes available, these connectors prioritize environmental compliance. Suitable for military and industrial use, they provide a durable and dependable solution for demanding environments.