MIL-DTL-38999 Series I connectors are designed for harsh environments, offering up to 128 contacts in an environmentally sealed insert. With an operating temperature range of -65 °C to 200 °C, these connectors provide reliable performance in extreme conditions. Featuring front wall mount, rear wall mount, and jam nut receptacles, they are suitable for a variety of applications. Utilizing M39029 rear release crimp contacts, they ensure secure connections in high vibration environments. The high strength aluminum shells come in various plating options, including cadmium-free finishes for RoHS compliance. With hermetic sealing and a range of mounting options, these connectors are ideal for military and aerospace applications.