MIL-DTL-38999 Series II connectors are built for rugged environments, featuring up to 128 contacts in an environmentally sealed insert. With an operating temperature range of -65 °C to 200 °C, these connectors offer reliability in extreme conditions. Available in various mounting styles such as front and rear wall mount, jam nut, and box mount receptacles, they cater to diverse installation needs. The connectors come in 9 shell sizes and 52 insert arrangements, utilizing M39029 rear release crimp contacts for secure connections. Crafted from durable aluminum with options for different plating finishes, including RoHS compliant variants, these connectors ensure longevity and performance. Ideal for military and industrial applications, they meet stringent MIL-DTL-38999 II specifications, guaranteeing quality and reliability in critical operations.