MIL-DTL-38999 Series I connectors are robust and versatile, featuring up to 128 contacts within an environmentally sealed insert. Designed for harsh environments, these connectors operate flawlessly in temperatures ranging from -65 °C to 200 °C. The family includes front and rear wall mount options, as well as jam nut receptacles and RFI grounding plugs. With 9 shell sizes and 52 insert arrangements available, they accommodate various connectivity needs. Utilizing M39029 rear release crimp contacts, they ensure secure connections. The high-strength aluminum shells come in multiple plating options, including cadmium-free finishes for RoHS compliance. Suitable for military and industrial applications, these connectors offer reliable performance with 500 mating cycles.