MIL-DTL-38999 Series I connectors are paramount for harsh environment applications, featuring up to 128 contacts in an insert. These connectors, designed for military specifications, offer exceptional durability with a wide operating temperature range from -65°C to 200°C. Available in various shell sizes and insert arrangements, they provide versatility for different connectivity needs. The connectors come in high-strength aluminum shells with options for plating, including cadmium-free finishes. With front and rear wall mount receptacles, as well as jam nut receptacles, they ensure secure installations. Utilizing M39029 rear release crimp contacts, they guarantee reliable connections for critical operations. Meeting stringent environmental sealing standards, these connectors are essential for rugged military and industrial environments.