MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts in an insert with environmental sealing. Operating between -65 °C and 200 °C, these connectors come in various configurations including front wall mount, rear wall mount, jam nut, and more. Available in 9 shell sizes and 52 insert arrangements, they utilize M39029 rear release crimp contacts. Constructed with aluminum shells and various plating options, such as electroless nickel and cadmium finishes, these connectors ensure durability and reliability. Perfect for military and industrial applications, they offer secure connectivity with gold-plated removable crimp contacts. With a mating type of bayonet, these connectors guarantee easy and efficient installations.