MIL-DTL-38999 Series II connectors offer rugged, high-performance connectivity with up to 128 contacts in an insert. Designed for harsh environments, these connectors feature various mounting options, including front and rear wall mount, jam nut, and box mount receptacles. Available in 9 shell sizes and 52 insert arrangements, they utilize M39029 rear release crimp contacts for reliable connections. Constructed of aluminum with plating options such as electroless nickel and cadmium olive drab, these connectors are RoHS compliant. With a wide operating temperature range of -65 °C to 200 °C, they are suitable for demanding applications in military, aerospace, and industrial settings.