Sandpaper Grit Conversion Chart, 00028 0. This chart offers a side by side comparison of the abrasives Conversion chart abrasives - grit sizes. 00087 0. 00047 0. Search is the most efficient way to navigate the Engineering ToolBox. 00122 0. Use conventional abrasives as normal prior to going into the Compare the grain sizes of Micro-mesh with FEPA, JIS, and ANSI. Sandpaper grits are categorized by how coarse the abrasive material is. Danforth, Here is a copy of the table that we use for stainless steel surface finishes in the pharmaceutical industry. Contact our APPLICATIONS LAB As a Sandpaper Abrasive supplier, I've seen firsthand how important it is for our customers to have this knowledge.