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Quick Reference Mesh and Grit Sizing
μm
ASTM mesh
F Grit
mm
ASTM mesh
F Grit
3 - 1200 1 18 -
4.5 - 1000 1.04 - 20
6.5 - 800 1.18 16 -
9.3 - 600 1.25 - 16
12.8 - 500 1.4 14 -
17.3 - 400 1.48 - 14
22.8 - 360 1.7 12 -
29.2 - 320 1.75 - 12
36.5 - 280 2 10 -
38 400 - 2.1 - 10
44.5 - 240 2.36 8 -
45 325 - 2.5 - 8
53 270 230 2.8 7 -
63 230 220 3.35 6 -
75 200 180
90 170 150
106 140 -
110 - 120
125 120 -
130 - 100
150 100 -
155 - 90
180 80 -
190 - 80
212 70 -
220 - 70
250 60 -
270 - 60
300 50 -
320 - 54
355 45 -
390 - 46
425 40 -
450 - 40
500 35 -
530 - 36
600 30 -
630 - 30
710 25 -
750 - 24
850 20 -
880 - 22