MIL-DTL-38999 Series I connectors are rugged and reliable, designed for harsh environments with up to 128 contacts in an insert. These circular receptacles feature front wall mount, rear wall mount, and jam nut receptacles, all offering RFI grounding plugs for added protection. With a wide operating temperature range of -65 °C to 200 °C, they are suitable for diverse applications. Utilizing M39029 rear release crimp contacts, these connectors ensure secure connections in sizes 22D, 22M, 22, 20, 16, and 8. Encased in high-strength aluminum shells with various plating options including cadmium-free finishes, they meet stringent military specifications for performance and durability. Ideal for demanding environments, MIL-DTL-38999 Series I connectors guarantee reliable connectivity in critical systems.