MIL-DTL-38999 Series I connectors are designed for harsh environments, featuring up to 128 contacts in a sealed insert with an operating temperature range of -65 °C to 200 °C. Available in various shell sizes and insert arrangements, these connectors offer front wall mount, rear wall mount, and jam nut receptacles with RFI grounding plugs. Constructed with high-strength aluminum shells and offering multiple plating options, including RoHS-certified finishes, they provide durability and reliability in military and industrial applications. The MS27502 receptacle cover, included with a chain and ring for added convenience, ensures protection and secure mating in demanding scenarios.