MIL-DTL-38999 Series I connectors are designed for demanding applications, offering up to 128 contacts in a single insert. These environmentally sealed connectors feature a wide operating temperature range from -65 °C to 200 °C, ensuring reliable performance in harsh conditions. Available in various shell sizes and insert arrangements, they accommodate M39029 rear release crimp contacts for secure connections. The high-strength aluminum shells come with different plating options, including cadmium-free finishes, meeting diverse environmental requirements. With front wall mount, rear wall mount, and jam nut receptacles, as well as RFI grounding plugs, these connectors provide versatile connectivity solutions for military and industrial applications.