MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts in an insert. These connectors are environmentally sealed, with an operating temperature range of -65°C to 200°C. Available in various configurations such as front and rear wall mount, jam nut, and box mount receptacles, they offer versatility for different applications. Utilizing M39029 rear release crimp contacts, they ensure secure connections. With options for RoHS certified finishes, including cadmium-free coatings, these connectors prioritize environmental compliance. The aluminum shells come in different plating options like electroless nickel and olive drab cadmium, catering to diverse needs. Suitable for military and industrial use, they guarantee reliability with a mating life of 500 cycles.