How are grit sizes categorized?

Grit sizes are categorized by numbers, which represent the size of the abrasives used in sandpaper or other abrasive products. The numbering system indicates the average number of openings in a specific area of the screen used to produce the sandpaper. A higher number corresponds to a finer grit, meaning the abrasive particles are smaller and produce a smoother finish. For example, 60-grit sandpaper is coarser than 220-grit sandpaper. This numerical classification helps professionals choose the right grit for various tasks in surface preparation, paint application, and refinishing processes to achieve desired results.

While color coding and material type may sometimes be used as additional descriptors or identifiers, they are not the primary method for categorizing grit sizes. Texture might be a characteristic of the abrasive but does not provide a standardized way to define grit sizes. The numerical classification remains the standard in the industry for consistency and effectiveness.