The Seiko 7431-5240 is a watch model based on the 7431 movement.
Parts List
| ES3W03HN00 | crystal - crystal (inorganic) |
| 35M17NA1 | crown |
| 0G235BAA1 | case back gasket |
| 86174080 | crystal gasket - plastic gasket for crystal |
| LL04A | band - band |
| 3AA125F1ANG | others - second hand |
| 3AA125F3ANG | others - second hand |
| 11P39DHH | others - hour hand |
| 11P39DHM | others - minute hand |
| 82711210 | others - case ring |
| 743110 | others - machine code |
| 74315300XG18 | others - dial |
| 74315650XL14 | others - dial |
| A180BS | others - push pin |
| EB0055B01 | others - crown and stem gasket |
| 0354077 | others - winding stem |
| 11P39AGH | others - hour hand |
| 7431524075 | others - case |
| 11P39AGM | others - minute hand |
| 1AA070A1BNG | others - hour hand |
| 1AA075A1BAA | others - hour hand |
| 2AA110A1BAA | others - minute hand |
| 11SC17T1 | others - second hand |
| 2AA100A1BDG | others - minute hand |
| 10P07DGM | others - minute hand |
Caliber 7431
