The MIL-DTL-38999 Series II connectors are designed for rugged environments, offering up to 128 contacts within an environmentally sealed insert. With an impressive operating temperature range from -65°C to 200°C, these connectors are built to withstand extreme conditions. Featuring various mounting options such as front and rear wall mount, jam nut, and box mount receptacles, they provide versatility in installation. Available in 9 shell sizes and 52 insert arrangements, these connectors utilize M39029 rear release crimp contacts for secure connections. Crafted from aluminum with plating options including cadmium and nickel, they ensure durability and reliability. RoHS compliant finishes are also offered for environmentally conscious applications. Suitable for military and industrial use, these connectors are essential for maintaining connectivity in demanding settings.