MIL-DTL-38999 Series II connectors boast up to 128 contacts within a sealed insert, designed for rugged environments with an impressive operating temperature range of -65 °C to 200 °C. Featuring various mounting options including front and rear wall mount, jam nut, and more, these connectors are versatile. Available in 9 shell sizes and 52 insert arrangements, they utilize M39029 crimp contacts and come in aluminum shells with plating options such as cadmium and nickel. With a straight plug design and EMI shielding, they ensure reliable connectivity in military and industrial applications.