MIL-DTL-38999 Series I connectors feature up to 128 contacts enclosed in an environmentally sealed insert, designed for robust performance in harsh environments. With an operating temperature range spanning from -65 °C to 200 °C, these connectors offer versatility and reliability. Available in various shell sizes and insert arrangements, they accommodate M39029 rear release crimp contacts in sizes 22D, 22M, 22, 20, 16, and 8. Constructed with high strength aluminum shells and offering multiple plating options including cadmium-free finishes, these connectors ensure durability and compliance. The series includes front wall mount, rear wall mount, and jam nut receptacles, as well as RFI grounding plugs, catering to diverse connectivity needs. Meeting MIL-DTL-38999 I military specifications, these circular connectors, with gold contact plating, deliver excellent performance in demanding applications. From their bayonet coupling design to their electroless nickel finish coating, every aspect is meticulously crafted for optimal functionality. With a service life rating of 500 cycles and a focus on environmental resilience, these connectors guarantee long-term performance in critical settings.