MIL-DTL-38999 Series I connectors offer high-performance connectivity with up to 128 contacts within an environmentally sealed insert. Designed for harsh environments, these connectors boast a wide operating temperature range of -65 °C to 200 °C. Featuring front and rear wall mount options, as well as jam nut receptacles, they provide versatile installation choices. Compliant with military specification MIL-DTL-38999 I, these circular plugs guarantee reliable performance in demanding applications. The connectors come in 9 shell sizes and 52 insert arrangements, accommodating various contact configurations with M39029 rear release crimp contacts. Constructed with durable high-strength aluminum shells and available in different plating options including cadmium-free finishes, they ensure robust and corrosion-resistant connectivity. Suitable for diverse industries requiring rugged and dependable connections, these MIL-DTL-38999 Series I connectors are essential components in critical systems.