Omega Seamaster Lug Widths
| Reference Number | Model | Lug Width |
| 2031.50.00 | Seamaster 300 41mm | 20mm |
| 2052.50.00 | Seamaster 300 36mm | 18mm |
| 210.XX.42.XX.XX.XXX | Seamaster 42mm | 20mm |
| 210.XX.44.XX.XX.XXX | Seamaster 44mm Chrono | 21mm |
| 23X.XX.XX.XX.XX.XXX | Seamaster 300 Heritage | 21mm |
| 234.10.49.XX.XX.XXX | Seamaster 300 Heritage | 19mm |
| 511.13.40.XX.XX.XXX | Seamaster 39.5mm | 20mm |
| 522.32.40.XX.XX.XXX | Seamaster Olympic | 20mm |
