MIL-DTL-38999 Series II connectors offer exceptional performance in harsh environments, with up to 128 contacts housed in a rugged insert. These environmentally sealed connectors boast a wide operating temperature range from -65°C to 200°C. Featuring various mounting options including front and rear wall mount, jam nut, and box mount receptacles, they provide versatility for different applications. Available in 9 shell sizes and 52 insert arrangements, these connectors use M39029 rear release crimp contacts for reliable connectivity. Constructed with aluminum shells and offered in a range of plating options including cadmium-free finishes, they ensure durability and compliance with RoHS standards. Perfect for military and industrial use, these connectors guarantee reliable performance with their gold-plated contacts and conductive properties.