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 including front and rear wall mount, jam nut, and box mount receptacles, they offer versatility in installation. With 52 insert arrangements and M39029 rear release crimp contacts in sizes 22D, 22M, 22, 20, 16, and 12, these connectors provide flexibility for different applications. Constructed with aluminum shells and offered in multiple plating options, including RoHS compliant finishes, they ensure reliable performance. The connectors, featuring bayonet coupling and gold-plated contacts, meet MIL-DTL-38999 II military specifications for durability. Suitable for use in demanding environments, they are ideal for applications requiring high-reliability connectivity.