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 are environmentally sealed and operate reliably in temperatures ranging from -65°C to 200°C. Built for durability, they come in high-strength aluminum shells with various plating options, including cadmium-free finishes. Utilizing M39029 rear release crimp contacts, they ensure secure connections in critical applications. The Series I connectors meet stringent military specifications and are ideal for aerospace, defense, and industrial use.