MIL-DTL-38999 Series II connectors are built to withstand harsh environments, featuring up to 128 contacts in a sealed insert. Designed for temperatures ranging from -65°C to 200°C, these connectors offer reliable performance in demanding conditions. With various mount types including front and rear wall mount, jam nut, and box mount receptacles, they provide flexibility for different applications. Available in 9 shell sizes and 52 insert arrangements, they utilize M39029 rear release crimp contacts for secure connections. Made with aluminum shells and offering multiple plating options, such as gold and electroless nickel, these connectors ensure durability and conductivity. Meeting military specification MIL-DTL-38999 II, they are suitable for critical operations where reliability is paramount.