MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts in an insert and offering secure environmental sealing. With an operating temperature range of -65 °C to 200 °C, these connectors are suitable for a wide range of applications. Available in various mounting styles including front and rear wall mount, jam nut, and box mount receptacles, they provide flexibility in installation. The connectors come in aluminum shells with options for plating finishes such as electroless nickel and cadmium olive drab. Utilizing M39029 rear release crimp contacts, they ensure reliable connectivity. These military-spec connectors, compliant with RoHS regulations, are ideal for demanding industrial and aerospace environments.