MIL-DTL-38999 Series II connectors offer robust performance with up to 128 contacts in an environmentally sealed insert. Designed for harsh environments, these connectors have a wide operating temperature range from -65 °C to 200 °C. Available in various configurations including front and rear wall mount, jam nut, and box mount receptacles, they meet stringent military specifications for reliability. Featuring removable crimp contacts and a bayonet mating system, they ensure secure connections in demanding applications. The aluminum shells come with a choice of plating options, including cadmium-free finishes for RoHS compliance. With a service rating of I and 500 mating cycles, these connectors are ideal for aerospace, defense, and industrial use.