MIL-DTL-38999 Series I connectors are designed for harsh environments, featuring up to 128 contacts in an environmentally sealed insert. With an operating temperature range of -65°C to 200°C, they offer reliable performance in extreme conditions. These connectors come in various configurations, including front and rear wall mount receptacles, as well as jam nut receptacles, all featuring RFI grounding plugs. Available in 9 shell sizes and 52 insert arrangements, they utilize M39029 rear release crimp contacts for secure connections. The high-strength aluminum shells are offered in different plating options, including cadmium-free finishes for RoHS compliance. These connectors, compliant with MIL-DTL-38999 I military specifications, are ideal for applications requiring durability and reliability in critical operations.