MIL-DTL-38999 Series I connectors are rugged and reliable, featuring up to 128 contacts in an environmentally sealed insert. Designed for harsh environments, these connectors have a wide operating temperature range of -65 °C to 200 °C. Available in various shell sizes and insert arrangements, they offer versatility for different applications. With options for front wall mount, rear wall mount, and jam nut receptacles, as well as RFI grounding plugs, they provide flexibility in installation. The connectors utilize M39029 rear release crimp contacts and come in high-strength aluminum shells with a choice of plating options, including cadmium-free finishes for RoHS compliance. Suitable for military and industrial use, these connectors ensure secure and durable electrical connections in demanding settings.