MIL-DTL-38999 Series II connectors are designed for harsh environments, featuring up to 128 contacts in an insert for robust connectivity. With front and rear wall mount options, as well as jam nut and box mount receptacles, they offer versatile installation. Operating in temperatures ranging from -65 °C to 200 °C, these connectors ensure reliable performance in challenging conditions. Available in 9 shell sizes and 52 insert arrangements, they use M39029 rear release crimp contacts for secure connections. Constructed with aluminum shells and various plating options, including cadmium-free finishes, they meet RoHS certification standards. Perfect for military and industrial applications, these connectors are essential for maintaining connectivity in demanding settings.