The MIL-DTL-38999 Series II connectors deliver high performance in harsh environments with up to 128 contacts, sealed for environmental protection. Operating between -65 °C and 200 °C, these connectors come in various configurations, including front and rear wall mounts, jam nut, and box mounts. Available in 9 shell sizes and 52 insert arrangements, they feature M39029 rear release crimp contacts in sizes 22D, 22M, 22, 20, 16, and 12. Constructed in aluminum shells with options like gold plating, electroless nickel, and cadmium finishes, these connectors ensure reliable connectivity in military and industrial applications. With RoHS compliant versions, they guarantee performance while meeting environmental standards.