Sandpaper Grit Chart for Paint, Wood, Metal and Automotive Finishing

Sandpaper grit selection affects cutting speed, scratch depth, surface smoothness and final coating quality. Buyers should choose grit by application, material and finish requirement rather than using one grit for every job.

Coarse grit applications

Lower grit numbers are used for heavier removal, rough shaping, paint stripping, rust removal and initial leveling. They cut faster but leave deeper scratch marks, so they usually need follow-up sanding with finer grits.

Medium grit applications

Medium grits are used for general smoothing, primer preparation, wood sanding and intermediate finishing. This range is often practical for workshops that need a balance between material removal and surface control.

Fine grit applications

Fine and extra-fine grits are selected for final smoothing, wet sanding, between-coat sanding and polishing preparation. For automotive and marine work, using a planned grit sequence helps produce a cleaner finish.

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