MIL-DTL-38999 Series II connectors are designed for harsh environments, offering up to 128 contacts in an environmentally sealed insert. With an operating temperature range of -65 °C to 200 °C, these connectors ensure reliable performance in extreme conditions. Available in various mounting options including front and rear wall mount, jam nut, and box mount receptacles, they provide versatility in installation. Featuring RoHS compliant finishes such as electroless nickel and cadmium olive drab plating, these connectors meet stringent environmental standards. Constructed with aluminum shells and utilizing M39029 rear release crimp contacts, they guarantee durability and secure connections. Suitable for military and industrial applications, these connectors are ideal for demanding environments requiring high reliability.