The MIL-DTL-38999 Series II connectors offer high-performance connectivity with up to 128 contacts in an environmentally sealed insert. Designed for harsh environments, they feature various mounting options including front and rear wall mount, jam nut, and box mount receptacles. Available in 9 shell sizes and 52 insert arrangements, these connectors utilize M39029 rear release crimp contacts for secure connections. Built with durable aluminum shells and offering a range of plating options, they ensure reliable operation in extreme conditions. With a wide temperature range from -65°C to 200°C, gold-plated removable crimp contacts, and bayonet coupling, these connectors are ideal for military and aerospace applications requiring rugged and reliable performance.