The MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts in an insert. With a wide operating temperature range of -65 °C to 200 °C, these connectors are ideal for demanding applications. Available in various mount types including front and rear wall mount, jam nut, and box mount receptacles, they offer versatility in installation. The connectors come in aluminum shells with options for plating such as cadmium and nickel, ensuring durability. Utilizing M39029 rear release crimp contacts, they provide reliable connections. RoHS compliant finishes are also available. Suitable for military and industrial use, these connectors are built to withstand tough conditions with their environmental sealing and rugged construction.