MIL-DTL-38999 Series I connectors are designed for harsh environments, featuring up to 128 contacts in an insert. These connectors are environmentally sealed and can operate in temperatures ranging from -65 °C to 200 °C. Available in various shell sizes and insert arrangements, they utilize M39029 rear release crimp contacts. With options for front wall mount, rear wall mount, and jam nut receptacles, they offer versatility for different applications. Made with high-strength aluminum shells, they come in plating options like electroless nickel and black anodized aluminum. RoHS certified finishes are also available. These connectors, meeting military specification MIL-DTL-38999 I, provide reliable connectivity in demanding environments.