MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts in an insert. These connectors are environmentally sealed, with an operating temperature range of -65 °C to 200 °C. Available in various mounting options such as front and rear wall mount, jam nut, and box mount receptacles, they offer flexibility in installation. With 52 insert arrangements and M39029 rear release crimp contacts, they ensure reliable connectivity. Constructed with aluminum shells and offering multiple plating options, including RoHS-certified finishes, these connectors meet stringent military specifications for durability and performance in demanding applications.