MIL-DTL-38999 Series II connectors offer reliable performance in harsh environments with up to 128 contacts in an insert. These circular connectors are environmentally sealed, ensuring durability in extreme conditions with an operating temperature range of -65 °C to 200 °C. Available in various mounting options such as front and rear wall mount, jam nut, and box mount receptacles, they provide versatility for different applications. Featuring straight, RFI grounding, and standard plugs with a 90-degree cable clamp, they offer flexibility in installation. With 9 shell sizes and 52 insert arrangements, these connectors utilize M39029 rear release crimp contacts for secure connections. Constructed with aluminum shells and offering multiple plating options, including RoHS compliant finishes, they guarantee high performance and longevity. Perfect for military and industrial use, these connectors ensure reliable connectivity in demanding situations.