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