MIL-DTL-38999 Series I connectors are designed for harsh environments, featuring up to 128 contacts in an environmentally sealed insert. With an 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 accommodate M39029 rear release crimp contacts for secure connections. The connectors come in high-strength aluminum shells with options for plating, including cadmium-free finishes. Their wall mount, jam nut receptacle, and RFI grounding plug options make them versatile for different applications. Meeting military specification MIL-DTL-38999 I, these connectors ensure durability and performance in demanding environments.