MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts in an environmentally sealed insert. With an operating temperature range of -65 °C to 200 °C, these connectors offer durability and reliability. Available in various mounting types such as front and rear wall mount, jam nut, and box mount receptacles, they suit diverse applications. The connectors come in aluminum shells with multiple plating options, including cadmium-free finishes. Utilizing M39029 rear release crimp contacts, they ensure secure connections. RoHS compliant options are also available, making them a versatile choice for military and industrial applications.