MIL-DTL-38999 Series II connectors feature up to 128 contacts in an environmentally sealed insert, designed for harsh environments with an operating temperature range of -65 °C to 200 °C. Available in various mounting options such as front and rear wall mount, jam nut, and box mount receptacles, they offer versatility in installation. These connectors, compliant with military specification MIL-DTL-38999, come in aluminum shells with multiple plating options including electroless nickel and cadmium finishes. Incorporating M39029 rear release crimp contacts, they ensure reliable connectivity. With a contact arrangement of 39, gold plating, and a service rating of I, they are ideal for demanding applications that require durability and performance in challenging conditions.