The MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts in an insert and offering excellent environmental sealing. With an operating temperature range of -65 °C to 200 °C, these connectors are reliable in extreme conditions. Available in various mounting types, including front and rear wall mount, jam nut, and box mount receptacles, they provide versatility for different applications. The connectors come in aluminum shells with options for plating, such as electroless nickel and cadmium finishes. Utilizing M39029 rear release crimp contacts, they ensure secure connections. Meeting military specification MIL-DTL-38999 II, these connectors are ideal for demanding industrial and aerospace environments.