Used to determine if aggregate is flaky; i.e. if thickness is less than 0.6 of nominal size. Manufactured from heavy steel sheet, they have dimensions as specified by Standards and are available in the following size opening:
| Model | Slot width mm | Slot length mm |
| A049-01 | 4.9 | 30 |
| A049-02 | 7.2 | 40 |
| A049-03 | 10.2 | 50 |
| A049-04 | 14.4 | 60 |
| A049-05 | 19.7 | 80 |
| A049-06 | 26.3 | 90 |
| A049-07 | 33.9 | 100 |
The complete set of n° 7 flakiness sieves is also available, code A049 KIT (15 Kg approx.).
