MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts within an insert. With environmental sealing and a wide operating temperature range from -65 °C to 200 °C, these connectors ensure reliable performance in demanding conditions. Available in various mounting styles such as front wall mount, rear wall mount, jam nut, and box mount receptacles, they offer flexibility in installation. The connectors come in 9 shell sizes and 52 insert arrangements, accommodating M39029 rear release crimp contacts. Constructed with aluminum shells and offering multiple plating options, including RoHS compliant finishes, these connectors prioritize durability and compatibility. Perfect for military and industrial applications, they guarantee secure electrical connections with their bayonet coupling and gold-plated removable crimp contacts.