MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts in an insert. With front and rear wall mount options, jam nut, and box mount receptacles, they offer versatile installation choices. Operating between -65 °C and 200 °C, these connectors are environmentally sealed for reliable performance. Available in various shell sizes and insert arrangements, they utilize M39029 rear release crimp contacts for secure connections. Constructed with aluminum shells and offering plating options like cadmium and nickel, they ensure durability. RoHS compliant finishes are also available. Perfect for military applications, these connectors guarantee conductivity and ingress protection, with a service rating of I for environmental resilience.