MIL-DTL-38999 Series II connectors feature up to 128 contacts in an insert, designed for harsh environments with an operating temperature range of -65 °C to 200 °C. Available in various mount types 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 II, come in aluminum shells with options for plating including cadmium and nickel. Utilizing M39029 rear release crimp contacts, they ensure secure connections. With features like bayonet coupling, gold contact plating, and environmental sealing, they guarantee reliable performance in demanding applications.