MIL-DTL-38999 Series I connectors offer reliable connectivity in harsh environments, featuring up to 128 contacts within an environmentally sealed insert. Operating seamlessly in temperatures ranging from -65 °C to 200 °C, these connectors come in various configurations including front and rear wall mount, as well as jam nut receptacles with RFI grounding plugs. With 9 shell sizes and 52 insert arrangements available, they utilize M39029 rear release crimp contacts in different sizes, ensuring versatility in application. Constructed with high-strength aluminum shells, these connectors come with a range of plating options such as cadmium and nickel, meeting various industry standards. Perfect for military and industrial use, they guarantee durability with a mating life of 500 cycles and offer reliable conductivity. Non-RoHS compliant, these connectors are ideal for demanding environments requiring robust and secure electrical connections.