MIL-DTL-38999 Series I connectors are designed for harsh environments, featuring up to 128 contacts in an insert. With front wall mount, rear wall mount, and jam nut receptacles, they offer versatility in installation. These connectors, compliant with military specification MIL-DTL-38999 I, are sealed for environmental protection and can operate in temperatures ranging from -65 °C to 200 °C. Utilizing M39029 rear release crimp contacts, they ensure secure connections in sizes 22D, 22M, 22, 20, 16, and 8. Available in 9 shell sizes and 52 insert arrangements, these connectors come with various plating options, including cadmium-free finishes for RoHS compliance. The high-strength aluminum shells are durable, and options like electroless nickel and olive drab cadmium plating enhance their longevity in demanding applications. Suitable for use in military and industrial settings, these connectors offer reliable performance with their conductivity and environmental resistance, making them ideal for critical electronic systems.