MIL-DTL-38999 Series II connectors feature up to 128 contacts in an environmentally sealed insert, designed for rugged applications. With an impressive operating temperature range of -65 °C to 200 °C, these connectors offer reliable performance in harsh environments. Available in various mounting styles such as front wall mount, rear wall mount, jam nut, and box mount receptacles, they provide flexibility for different installation needs. The connectors come in 9 shell sizes and 52 insert arrangements, utilizing M39029 rear release crimp contacts for secure connections. Constructed with aluminum shells and offering plating options like gold, electroless nickel, and cadmium-free finishes, they ensure durability and corrosion resistance. These connectors, meeting MIL-DTL-38999 II standards, are ideal for military and aerospace applications where reliability is paramount.