MIL-DTL-38999 Series II connectors are designed for harsh environments, offering up to 128 contacts in an insert. With an operating temperature range of -65 °C to 200 °C, they are ideal for rugged applications. Featuring various mounting options including jam nut and box mount receptacles, these connectors ensure secure and reliable connections. Available in 9 shell sizes and 52 insert arrangements, they accommodate M39029 rear release crimp contacts. Constructed with aluminum shells and offering multiple plating options, including cadmium-free finishes, they meet RoHS compliance standards. The connectors, with gold-plated contacts and a bayonet coupling design, guarantee high conductivity and durability. Suitable for military and industrial use, they are classified under MIL-DTL-38999 II series, providing top-notch performance in demanding environments.