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 mount types such as front and rear wall mount, jam nut, and box mount receptacles, they offer versatility in installation. The connectors, compliant with military specification MIL-DTL-38999 II, come in aluminum shells with options for plating finishes like gold, electroless nickel, and cadmium-free coatings. With a straight plug configuration and bayonet coupling, they ensure secure and efficient connectivity. Utilizing M39029 rear release crimp contacts, these connectors guarantee reliable performance, making them suitable for demanding applications in aerospace, defense, and industrial sectors.