The Seiko 5Y31-5260 is a watch model based on the 5Y31 movement.
Parts List
| RE6N74JN01 | crystal |
| RE6N74JN | crystal |
| 30MA6NA1 | crown - crown |
| 0G0055B01 | case back gasket - crown and stem gasket |
| 0H2702B01 | case back gasket - rotating bezel gasket |
| OH2702B01 | case back gasket |
| Z1500K | band - metal band |
| Z1500K-BK5G | clasp - clasp |
| 5Y315260 | others - case back |
| 5Y31526025 | others - case |
| 5Y315588XB14 | others - dial |
| 5Y315588XG14 | others - dial |
| 5Y319 | others - machine code |
| 82811540 | others - case ring |
| A180BS | others - push pin |
| 0351670 | others - winding stem |
| 2BA090A0BNG | others - minute hand |
| 12SC24NG | others - second hand |
| 09T18NGM | others - minute hand |
| 1BA057A0BNG | others - hour hand |
| 09TD2NGH | others - hour hand |