The MIL-DTL-38999 Series II connectors are designed for harsh environments, offering up to 128 contacts in an insert that is environmentally sealed. With a wide operating temperature range from -65 °C to 200 °C, these connectors are suitable for various applications. Available in various mounting styles such as front wall mount, rear wall mount, jam nut, and more, they provide flexibility in installation. Featuring aluminum shells with options for different plating finishes, including RoHS certified cadmium-free options, these connectors ensure reliable performance. Utilizing M39029 rear release crimp contacts, they offer secure connections in sizes 22D, 22M, 22, 20, 16, and 12. Ideal for military and industrial use, MIL-DTL-38999 Series II connectors are known for their durability, with a service rating of Class E and a mating life of 500 cycles. With their conductive nature and environment-resistant design, they meet stringent requirements for connectivity in demanding settings.