MIL-DTL-38999 Series I connectors are designed for demanding environments, featuring up to 128 contacts in an insert. With an operating temperature range of -65 °C to 200 °C, these connectors are environmentally sealed for reliable performance. Available in various shell sizes and insert arrangements, they offer flexibility for different applications. Constructed with high-strength aluminum shells and offering multiple plating options, including RoHS-certified finishes, they ensure durability and compliance with industry standards. The connectors, including receptacles with different mounting options, use M39029 rear release crimp contacts for secure connections. With features like bayonet coupling and RFI grounding plugs, they provide efficient signal transmission in military and industrial settings.