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 reliable performance in extreme conditions. Available in various mounting styles, including front wall mount, rear wall mount, jam nut, rear box mount, and front box mount receptacles, they cater to diverse installation needs. Featuring a range of plating options such as cadmium-free finishes and black anodized aluminum, these connectors ensure durability and compliance with RoHS standards. The connectors, made of aluminum shells, accommodate M39029 rear release crimp contacts, offering versatility in contact arrangements. Suitable for military and industrial applications, these connectors provide secure and efficient electrical connections in demanding environments.