The 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. These thin-walled, restricted length connectors come in various mounting options such as front and rear wall mount, jam nut, and box mount receptacles. Available in 9 shell sizes and 52 insert arrangements, they use M39029 rear release crimp contacts in sizes 22D, 22M, 22, 20, 16, and 12. Constructed with aluminum shells, they offer plating options including cadmium finishes and electroless nickel. With a bayonet coupling mechanism and gold contact plating, these connectors ensure reliable performance with a maximum operating temperature of 175 °C. Meeting MIL-DTL-38999 II military specifications, they are ideal for applications requiring durability and high-performance connectivity in demanding settings.
