MIL-DTL-38999 Series I connectors offer high-performance connectivity with up to 128 contacts in an environmentally sealed insert. Operating efficiently in extreme conditions, they withstand temperatures ranging from -65 °C to 200 °C. Featuring rear wall mount, front wall mount, and jam nut receptacles, this harsh environment connector family is versatile and reliable. With 9 shell sizes and 52 insert arrangements available, they accommodate various applications with ease. Utilizing M39029 rear release crimp contacts in sizes 22D, 22M, 22, 20, 16, and 8 (coax and twinax), these connectors ensure secure and efficient connections. Constructed with high-strength aluminum shells and offering a range of plating options including electroless nickel, cadmium olive drab, and black anodized aluminum, they provide durability and corrosion resistance. RoHS compliant options are available, making them suitable for environmentally conscious applications. Ideal for military and industrial use, MIL-DTL-38999 Series I connectors are the perfect choice for demanding connectivity needs.