MIL-DTL-38999 Series I connectors are designed for harsh environments, featuring up to 128 contacts in a rugged insert with environmental sealing. With an impressive operating temperature range of -65 °C to 200 °C, these connectors are built to withstand extreme conditions. Available in various shell sizes and insert arrangements, they offer versatility for different applications. The connectors come in high-strength aluminum shells with options for plating, including cadmium-free finishes. With front wall mount, rear wall mount, and jam nut receptacles, as well as RFI grounding plugs, they provide reliable connectivity in demanding settings. Utilizing M39029 rear release crimp contacts, these connectors ensure secure and efficient connections. Suitable for military and industrial use, MIL-DTL-38999 Series I connectors are known for their durability and performance.