MIL-DTL-38999 Series I connectors are designed for harsh environments, featuring up to 128 contacts in an insert. With a wide operating temperature range of -65 °C to 200 °C, these connectors offer reliable performance in extreme conditions. Available in various shell sizes and insert arrangements, they come with M39029 rear release crimp contacts for secure connections. The connectors are housed in high-strength aluminum shells with options for different plating finishes, including RoHS-certified cadmium-free coatings. Suitable for military and industrial applications, they provide environmental sealing and RFI grounding for enhanced reliability. The series includes front wall mount, rear wall mount, and jam nut receptacles, meeting MIL-DTL-38999 I specifications for quality and performance.