MIL-DTL-38999 Series I connectors feature up to 128 contacts in an environmentally sealed insert, designed for harsh environments with an operating temperature range of -65 °C to 200 °C. Available in various shell sizes and insert arrangements, they 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, these connectors ensure reliable performance. Utilizing M39029 rear release crimp contacts, they are ideal for military and aerospace applications, providing durability and conductivity with gold-plated removable crimp contacts. The bayonet coupling and box mounting design of the MS27496 connectors make them suitable for a wide range of industrial and military uses, meeting the stringent requirements of MIL-DTL-38999 I specifications.