MIL-DTL-38999 Series I connectors are designed for harsh environments, offering up to 128 contacts in an insert. These environmentally sealed connectors have an impressive operating temperature range of -65 °C to 200 °C. The family includes front and rear wall mount as well as jam nut receptacles, with options for RFI grounding plugs. Available in 9 shell sizes and 52 insert arrangements, they utilize M39029 rear release crimp contacts in various sizes. Constructed with high strength aluminum shells, they come in a range of plating options including cadmium-free finishes. These connectors, compliant with MIL-DTL-38999 I specifications, are ideal for applications requiring durability and reliability in challenging conditions.