MIL-DTL-38999 Series II connectors feature up to 128 environmentally sealed contacts suitable for harsh environments, with an operating temperature range of -65 °C to 200 °C. Available in various mounting configurations including front and rear wall mount, jam nut, and box mount receptacles, as well as straight and RFI grounding plugs, these connectors offer versatility. With 52 insert arrangements and M39029 rear release crimp contacts in multiple sizes, they ensure reliable connections. Constructed with aluminum shells and offering plating options like electroless nickel and cadmium finishes, they meet rigorous standards for durability. The RoHS compliant connectors, known for their high mating cycle durability, are ideal for military and industrial applications requiring secure, conductive connections in challenging environments.