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. These connectors, compliant with military specification MIL-DTL-38999 II, offer reliable performance in a wide temperature range from -65 °C to 200 °C. With various plating options available, including gold and electroless nickel, they ensure durability and conductivity. Their aluminum shells provide robust protection, while the use of M39029 rear release crimp contacts guarantees secure connections. RoHS compliant finishes are also offered, making them a dependable choice for demanding applications in the military and beyond.