graduated eyelet system used by many Italian hardware suppliers, such as Moro Minuterie and Ambrosetti
Eyelet numbers correspond to eyelet barrel outside diameter in millimeters. They increase in increments of 5mm.
| Series | Material Thickness | Barrel Diameter | Flange Diameter | Height |
|---|---|---|---|---|
| 15 | 0.20 | 1.5 | 2.5±0.10 | 0.40 |
| 20 | 0.25 | 2.0 | 3.5±0.10 | 0.45 |
| 22 | 0.25 | 2.2 | 3.7±0.10 | 0.50 |
| 25 | 0.30 | 2.5 | 4.0±0.12 | 0.55 |
| 30 | 0.30 | 3.0 | 5.0±0.12 | 0.60 |
| 35 | 0.30 | 3.5 | 5.5±0.12 | 0.65 |
| 40 | 0.30 | 4.0 | 6.0±0.12 | 0.70 |
| 45 | 0.30 | 4.5 | 6.5±0.12 | 0.75 |
| 50 | 0.30 | 5.0 | 7.5±0.15 | 0.80 |
| 55 | 0.30 | 5.5 | 7.5±0.15 | 0.85 |
| 60 | 0.30 | 6.0 | 8.0±0.15 | 0.70 |