The MIL-DTL-38999 Series II connectors offer robust performance in harsh environments, featuring up to 128 contacts within an environmentally sealed insert. Designed for durability, these connectors can operate in temperatures ranging from -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. With options for straight, RFI grounding, and 90-degree cable clamp plugs, these connectors come in 9 shell sizes and 52 insert arrangements. Utilizing M39029 rear release crimp contacts, they ensure secure connections in sizes 22D, 22M, 22, 20, 16, and 12. Crafted from aluminum, with plating choices including cadmium-free finishes, these connectors meet RoHS certification standards. Suitable for military and industrial use, they guarantee reliable performance with 500 mating cycles and environmental resistance.