MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts in a sealable insert. With an operating temperature range of -65 °C to 200 °C, these connectors offer reliable performance in extreme conditions. Available in various mounting styles, 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 cadmium-free finishes. Utilizing M39029 rear release crimp contacts, they ensure secure connections. Ideal for military and aerospace use, these connectors meet stringent MIL-DTL-38999 II specifications for durability and performance.