MIL-DTL-38999 Series I connectors boast up to 128 contacts, offering reliable connectivity in harsh environments. With a wide operating temperature range from -65 °C to 200 °C, these circular connectors are designed for durability. Featuring front wall mount, rear wall mount, and jam nut receptacles, they cater to various installation needs. The connectors come in 9 shell sizes and 52 insert arrangements, accommodating diverse applications. Utilizing M39029 rear release crimp contacts, they ensure secure connections. Constructed with high-strength aluminum shells and available in different plating options, including cadmium-free finishes, these connectors meet stringent military specifications. Suitable for demanding scenarios, they guarantee optimal performance and longevity.