MIL-DTL-38999 Series I connectors offer high-performance connectivity for harsh environments. With up to 128 contacts in an insert, they ensure reliable signal transmission in extreme conditions. These environmentally sealed connectors feature a wide operating temperature range from -65 °C to 200 °C, making them ideal for aerospace, military, and industrial applications. Available in various shell sizes and insert arrangements, they accommodate different contact types, including coax and twinax. The aluminum shells come in a range of plating options, from cadmium-free finishes to electroless nickel and anodized aluminum, ensuring durability and corrosion resistance. With bayonet coupling and front or rear wall mount options, these connectors provide secure and efficient mating. Their MIL-DTL-38999 I specification guarantees compliance with stringent military standards, making them a trusted choice for mission-critical systems.