The 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, as well as jam nut and box mount receptacles, they offer versatile connectivity solutions. Operating efficiently in temperatures ranging from -65°C to 200°C, these connectors ensure reliable performance in extreme conditions. Available in various shell sizes and insert arrangements, they utilize M39029 rear release crimp contacts for secure connections. Constructed with aluminum shells and offering a choice of plating options, including cadmium-free finishes, they meet RoHS compliance standards. Ideal for military and industrial applications, these connectors provide durable, environmentally sealed connectivity for critical systems.