The MIL-DTL-38999 Series I connectors offer rugged reliability for demanding applications, featuring up to 128 contacts within a sealed insert. Operating seamlessly in temperatures ranging from -65 °C to 200 °C, these connectors are designed to endure harsh environments. Available in various shell sizes and insert arrangements, they accommodate M39029 rear release crimp contacts in different sizes, ensuring versatile connectivity options. With front and rear wall mount as well as jam nut receptacles, along with RFI grounding plugs, these connectors provide secure installations. Crafted from high-strength aluminum, they boast a range of plating options, including cadmium-free finishes for RoHS compliance. Ideal for military and industrial use, the MIL-DTL-38999 Series I connectors guarantee durable performance with their electroless nickel coating, making them suitable for diverse applications requiring reliable electrical connections in challenging settings.