The Seiko 5M42-0B40 is a watch model based on the 5M42 movement.
Parts List
| 280A03JN02 | crystal - crystal (inorganic) |
| 280A03JN | crystal |
| 45M82NA1 | crown - crown |
| 45M82NS1 | crown - crown |
| 45M85NS1 | crown |
| FH2981B01 | case back gasket - case back gasket |
| EC0060B0 | case back gasket - crown gasket |
| 80604501 | pusher |
| EC0060B01 | pusher - pusher gasket |
| 80604509 | pusher - button |
| 4337LG | band - band |
| 4E16KZ | band - band |
| 4E17KZ | band - band |
| 4337JG | band - band |
| 4337KG-LKG | band - link |
| 4337LG-LKG | band - link |
| 4337KG | band - band |
| 4E15KZ | band - band |
| 4337LG-BK1S | clasp - buckle |
| 4337LG-PB1 | clasp - parts for buckle |
| 4337KG-BK1G | clasp - buckle |
| 4337KG-PB1 | clasp - parts for buckle |
| 2BC110A1BAA | others - minute hand |
| 1BC080A1BAA | others - hour hand |
| 2BB120A2BAC | others - minute hand |
| 1BB080A2BAC | others - hour hand |
| 3AA125F0ANG | others - second hand |
| 3AA125F0ANS | others - second hand |
| 81400709 | others - button spring clip |
| 81350540 | others - button spring |
| EG0060B01 | others - button gasket |
| 5M420B4075Z | others - case |
| 5M420B40 | others - case back |
| 0866636 | others - holding ring for dial |
| 0878729 | others - date dial |
| 0878731 | others - date dial |
| 5M420B4079Z | others - case |
| 5M420B407HZ | others - case |
| 0351651 | others - winding stem |
| 5M420C18XG14 | others - dial |
| 5M420C18XS14 | others - dial |
| 5M420C18XS23 | others - dial |
| 5M420C28XS14 | others - dial |
| 5M420C28XS24 | others - dial |
| 5M420C38XS14 | others - dial |
| 5M420C48XS14 | others - dial |
| 5M425 | others - machine code |
| A180BS | others - push pin |
| 1BB080A2BAE | others - hour hand |
| 3AA125F3ANB | others - second hand |
| 2BB120A2BAE | others - minute hand |
Caliber 5M42
