8QD221 shaft collar with set screw and metric threads is an industrial shaft-clamping component designed to secure components to a shaft. The set-screw design provides axial retention by tightening against the shaft, with metric threads for compatibility with metric hardware and accessories. The 8QD221 model identifies the specific size and fit for applications requiring precise positioning of components such as gears, pulleys, bearings, or sprockets on metric shafts. Use in machinery and automation where a compact, reliable method is needed to lock parts in place on rotating shafts.
