The MIL-DTL-38999 Series II connectors are designed for harsh environments, offering up to 128 contacts in an environmentally sealed insert. With a wide operating temperature range from -65 °C to 200 °C, these connectors are suitable for demanding applications. Featuring various mounting options such as front and rear wall mount, jam nut, and box mount receptacles, they provide flexibility in installation. Available in 9 shell sizes and 52 insert arrangements, they use M39029 rear release crimp contacts for reliability. Constructed with aluminum shells and offering multiple plating options, including RoHS compliant finishes, these connectors ensure durability and performance. Perfect for military and industrial use, they meet MIL-DTL-38999 II specifications, guaranteeing quality and reliability in demanding environments.