MIL-DTL-38999 Series I connectors boast up to 128 contacts within their environmentally sealed inserts, designed for harsh environments with an operating temperature range of -65 °C to 200 °C. Featuring front and rear wall mount options, as well as jam nut receptacles and RFI grounding plugs, they offer versatility in installation. With 9 shell sizes and 52 insert arrangements available, these connectors utilize M39029 rear release crimp contacts in various sizes, including coax and twinax. Crafted with high-strength aluminum shells, they come in a range of plating options, from cadmium finishes to RoHS-certified alternatives, ensuring durability and compliance. Perfect for military and industrial applications, these connectors guarantee reliable performance in demanding conditions.