The MIL-DTL-38999 Series I connectors offer reliable connectivity in harsh environments with up to 128 contacts in an insert. These circular receptacles, featuring front wall mount, rear wall mount, and jam nut options, are designed for military and aerospace applications. With a wide operating temperature range of -65°C to 200°C, they ensure performance in extreme conditions. The connectors, made of high-strength aluminum, come in various plating options, including cadmium-free finishes. Utilizing M39029 rear release crimp contacts, they guarantee secure and efficient connections. Their RFI grounding plugs enhance signal integrity, while their environmental sealing provides protection against dust, moisture, and other contaminants. Meeting MIL-DTL-38999 I specifications, these connectors are essential for critical systems that demand rugged and dependable interconnect solutions.