The MIL-DTL-38999 Series II connectors are designed for harsh environments, offering up to 128 contacts in an environmentally sealed insert. With an operating temperature range of -65°C to 200°C, these connectors are ideal for demanding applications. 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 use M39029 rear release crimp contacts for reliable connectivity. Constructed with aluminum shells and offered in different plating options including cadmium and nickel, they ensure durability and corrosion resistance. RoHS compliant finishes are also available. Trusted for their quality and performance, these connectors are essential for military and industrial applications.