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Contact Supplier| Code | B.S.S. | A.S.T.M | I.S.S. | Microns | Millimetres |
| 01 | 4 | 5 | 480 | – | 7.75 |
| 02 | 5 | 6 | 340 | 1812 | 3.33 |
| 03 | 6 | 7 | 280 | 2411 | 2.80 |
| 04 | 7 | 8 | 240 | 2207 | 2.36 |
| 05 | 8 | 10 | 200 | 2057 | 2.00 |
| 06 | 10 | 12 | 170 | 1698 | 1.70 |
| 07 | 12 | 14 | 140 | 1005 | 1.40 |
| 08 | 14 | 16 | 120 | 1200 | 1.18 |
| 09 | 16 | 18 | 100 | 1000 | 1.00 |
| 10 | 18 | 20 | 85 | 850 | 0.850 |
| 11 | 22 | 25 | 70 | 710 | 0.710 |
| 12 | 25 | 30 | 60 | 600 | 0.600 |
| 13 | 30 | 35 | 50 | 500 | 0.500 |
| 14 | 36 | 40 | 40 | 425 | 0.425 |
| 15 | 44 | 45 | 35 | 355 | 0.355 |
| 16 | 52 | 50 | 30 | 300 | 0.300 |
| 17 | 60 | 60 | 25 | 250 | 0.250 |
| 18 | 72 | 70 | 20 | 212 | 0.212 |
| 19 | 85 | 80 | 18 | 180 | 0.180 |
| 20 | 100 | 100 | 15 | 150 | 0.150 |
| 21 | 120 | 120 | 12 | 125 | 0.125 |
| 22 | 150 | 140 | 10 | 106 | 0.106 |
| 23 | 170 | 170 | 9 | 90 | 0.090 |
| 24 | 200 | 200 | 8 | 75 | 0.075 |
| 25 | 240 | 230 | 7 | 63 | 0.063 |
| 26 | 300 | 270 | 6 | 53 | 0.053 |
| 27 | 325 | 300 | 5 | 45 | 0.045 |
| 28 | 350 | 325 | 4 | 44 | 0.044 |
| 29 | 400 | 380 | 3 | 40 | 0.040 |