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 of -65 °C to 200 °C, these connectors offer reliable performance in extreme conditions. The thin-walled, restricted length design includes various mounting options such as front wall mount, rear wall mount, jam nut, rear box mount, and front box mount receptacles. Available in 9 shell sizes and 52 insert arrangements, they use M39029 rear release crimp contacts for secure connections. Constructed with aluminum shells and a range of plating options, including RoHS certified finishes, these connectors ensure durability and compatibility. Perfect for military and industrial applications, they meet MIL-DTL-38999 II specifications for quality and performance.