The Seiko 5Y31-5040 is a watch model based on the 5Y31 movement.
Parts List
| RECN00JN01 | crystal |
| RECN00JN | crystal |
| 30MA6NA1 | crown - crown |
| 0G0055B01 | case back gasket - crown and stem gasket |
| 0H2702N01 | case back gasket - case back gasket |
| 0G0055B0 | case back gasket |
| B1586G | band - metal band |
| B1587G | band - metal band |
| B1586K | band |
| B1595G | band - metal band |
| B1595K | band |
| B1587G-BK5G | clasp - clasp |
| B1586G-BK5G | clasp - clasp |
| B1586K-BK5G | clasp - clasp |
| B1595G-BK5G | clasp - clasp |
| B1595K-BK5G | clasp - clasp |
| 09T04N1H | others - hour hand |
| 09T04N1M | others - minute hand |
| 0351670 | others - winding stem |
| 5Y315040 | others - case back |
| 5Y31504025 | others - case |
| 5Y315178XG14 | others - dial |
| 5Y315188X994 | others - dial |
| 5Y315190X984 | others - dial |
| 5Y315190X994 | others - dial |
| 5Y315198X984 | others - dial |
| 5Y315198X994 | others - dial |
| 5Y315200XG14 | others - dial |
| 5Y315208XG14 | others - dial |
| 5Y315210X984 | others - dial |
| 5Y315210X994 | others - dial |
| 5Y315218X984 | others - dial |
| 5Y315218X994 | others - dial |
| 5Y315220XG14 | others - dial |
| 5Y315220XY14 | others - dial |
| 5Y315230X984 | others - dial |
| 5Y315230X994 | others - dial |
| 5Y315390X994 | others - dial |
| 5Y315398X994 | others - dial |
| 5Y315400X994 | others - dial |
| 5Y315408X994 | others - dial |
| 5Y319 | others - machine code |
| 82800680 | others - case ring |
| A180BS | others - push pin |
| 13SC04A2 | others - second hand |
| 08T10DAM | others - minute hand |
| 09T32DAM | others - minute hand |
| 08T32DAM | others - minute hand |
| 09T38DAM | others - minute hand |
| 09T32DAH | others - hour hand |
| 08T10DAH | others - hour hand |
| 08T32DAH | others - hour hand |