Heavy Duty 0.5mm to 6.5mm Drill Chuck With Key

Heavy Duty 0.5mm to 6.5mm Drill Chuck With Key

A compact, keyed 3-jaw drill chuck designed for holding miniature and micro drill bits ranging from 0.5 mm to 6.5 mm, providing high concentricity, secure torque transmission, and minimal runout for precision drilling tasks. The 0.5 mm – 6.5 mm Keyed Drill Chuck is engineered for fine-tolerance, micro-drilling applications where standard-sized chucks lack the grip range to hold ultra-thin shanks. Constructed from hardened, drop-forged alloy steel, it features heat-treated three-jaw teeth that exert uniform clamping pressure to eliminate slippage and tool runout. Using the included bevel-gear chuck key, operators can apply precise, high-mechanical leverage to lock micro drill bits firmly in place, preventing rotational slip even under heavy axial loads. Most units in this size class feature either a Jacobs Taper mount (commonly JT0 or B10) or a standard threaded mount (such as 3/8"-24 UNF or M10), making them ideal for high-RPM electric motors, mini drill presses, and CNC routing spindles.