MIL-DTL-38999 Series I connectors are designed for harsh environments, featuring up to 128 contacts in an environmentally sealed insert. With a wide operating temperature range of -65 °C to 200 °C, these connectors are ideal for demanding applications. Available in various shell sizes and insert arrangements, they utilize M39029 rear release crimp contacts for secure connections. The high-strength aluminum shells come in multiple plating options, including cadmium-free finishes for RoHS compliance. Whether it's front wall mount, rear wall mount, or jam nut receptacles, these connectors offer reliable performance in military and industrial settings.