FEPA P-grade · Converted
P360 in CAMI grit and microns.
P360 paper averages about 40.5 µm on the FEPA table. On the US CAMI scale that is between CAMI 240 and 320. A sheet printed plain "360" is a different animal: about 28 µm, nearer P500. If the instructions say P360 and the pack has no P on it, reach for the CAMI number, not the digits.
- Avg. particle
- ~40.5 µm
- FEPA table
- Nearest CAMI
- 240–320
- by particle size
- Plain "360"
- ~28 µm
- CAMI 360 ≈ P500
- 3M Trizact
- ·
- no A-grade paired by 3M
What P360 is for
Fine between-coat work; leveling primer under paint.
Either side of P360
The neighborhood.
Questions people ask
What is P360 in CAMI grit?
It falls between CAMI 240 and CAMI 320. P360 averages 40.5 microns, and no CAMI grade lands within 10% of that.
How many microns is P360 sandpaper?
About 40.5 microns average particle diameter, per the FEPA P-grade table (ISO 6344).
Is P360 the same as 360 grit?
No. P360 averages 40.5 microns; a sheet printed plain "360" on the CAMI scale averages 28, which is closer to P500. The CAMI sheet is the finer of the two.
Convert any other grade, from CAMI, microns or a Trizact A-number, on the grit converter.
Sizes are average particle diameters from the published FEPA (ISO 6344) and CAMI (ANSI B74.12/B74.18) tables. "Nearest" means within 10%; otherwise both neighbors are shown. Trizact pairings are 3M's own. Sources: Wikipedia, "Sandpaper" grit table (rev. 1127917881); Klingspor coated abrasives grit chart.