MIL-DTL-38999 Series II connectors are designed for harsh environments, with up to 128 contacts in an insert and an operating temperature range of -65 °C to 200 °C. Available in various configurations such as front and rear wall mount, jam nut, and box mount receptacles, they offer versatility for different applications. Featuring aluminum shells with options for plating including cadmium and nickel, these connectors ensure durability and reliable performance. Utilizing M39029 rear release crimp contacts, they are suitable for use in demanding military and industrial settings. With RoHS compliant finishes available, these connectors meet international standards for environmental responsibility.