MIL-DTL-38999 Series I connectors are designed for harsh environments, featuring up to 128 contacts in an insert. These circular receptacles, available in various mounting options, are front wall mount, rear wall mount, and jam nut receptacles, offering RFI grounding plugs for added versatility. With an operating temperature range from -65°C to 200°C, they are suitable for a wide range of applications. Built for durability, these connectors come in high-strength aluminum shells with a choice of plating options including gold, electroless nickel, and cadmium finishes. RoHS certified cadmium-free finishes are also available, ensuring compliance with environmental regulations. The connectors are MIL-DTL-38999 I compliant, offering reliable performance in demanding environments.