MIL-DTL-38999 Series II connectors offer robust connectivity with up to 128 contacts in a sealed insert, ideal for harsh environments. Operating efficiently between -65 °C and 200 °C, these connectors come in various styles such as front and rear wall mount, jam nut, and box mount receptacles. With options like straight, RFI grounding, and standard plugs, they suit diverse applications. Featuring M39029 rear release crimp contacts, they ensure secure connections. Available in aluminum shells with plating choices including electroless nickel and cadmium finishes, these connectors guarantee durability. Meeting military specifications, they are reliable for demanding tasks.