The MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts in an environmentally sealed insert. With an operating temperature range from -65°C to 200°C, these connectors offer durability in extreme conditions. Available in various mounting styles such as front and rear wall mount, jam nut, and box mount receptacles, they provide flexibility for different applications. The connectors come in aluminum shells with options for plating, including cadmium-free finishes. Utilizing M39029 rear release crimp contacts, they ensure secure connectivity with options for straight, RFI grounding, and standard plugs. Meeting military specification MIL-DTL-38999 II, these connectors are ideal for demanding applications where reliability is paramount.