MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts in an insert and environmental sealing. With an operating temperature range of -65 °C to 200 °C, these connectors are versatile and durable. Available in various configurations such as front and rear wall mount, jam nut, and box mount receptacles, they offer flexibility for different applications. The connectors come in aluminum shells with options for plating, including cadmium-free finishes. Utilizing M39029 rear release crimp contacts, they ensure reliable connectivity in demanding conditions. Suitable for military and industrial use, these connectors are known for their robust construction and high performance.