The MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts in an insert that is environmentally sealed. With an operating temperature range from -65 °C to 200 °C, these connectors offer reliable performance in extreme conditions. Available in various mounting options such as front wall, rear wall, jam nut, and box mount receptacles, they provide flexibility for different applications. Utilizing M39029 rear release crimp contacts, these connectors ensure secure and efficient connections. Constructed with aluminum shells and offering a choice of plating options including cadmium-free finishes, they meet RoHS compliance standards. Ideal for military and industrial use, these connectors guarantee durability and reliability in demanding environments.