MIL-DTL-38999 Series I connectors offer high-performance connectivity with up to 128 contacts in an environmentally sealed insert. Designed for harsh conditions, these connectors feature front and rear wall mount options, as well as jam nut receptacles with RFI grounding plugs. With a wide operating temperature range of -65 °C to 200 °C, they are suitable for diverse applications. The connectors come in 9 shell sizes and 52 insert arrangements, accommodating M39029 rear release crimp contacts in various sizes. Crafted from high-strength aluminum, they are available in different plating options, including cadmium-free finishes for RoHS compliance. Ideal for military and industrial use, these connectors ensure reliable performance in demanding environments.