The Seiko 5M42-0K50 is a watch model based on the 5M42 movement.
Parts List
| 290P03LN03 | crystal - crystal |
| 8K60A0SNW1 | crown - crown |
| FH2980B01 | case back gasket - case back gasket |
| 86565321 | crystal gasket - plastic gasket for crystal |
| 86178450 | bezel gasket - plastic gasket for bezel |
| A35E04SMS0A | pusher - button |
| 7C45ZB | band - band |
| 1AA075LCBSB | others - hour hand |
| 1AA075LCBSW | others - hour hand |
| 2AA110LDBSB | others - minute hand |
| 2AA110LDBSW | others - minute hand |
| 3AA135F0AAK | others - hand |
| 3AA135F0AAJ | others - second hand |
| 0351651 | others - winding stem |
| 83200273 | others - button spring clip |
| 81351630 | others - button spring |
| AD006BAD1 | others - crown and stem gasket |
| 5M420K50T0 | others - case |
| 82295809 | others - bezel |
| 5M420K50T0A | others - case |
| 0866636 | others - holding ring for dial |
| 0878729 | others - date dial |
| 0878730 | others - date dial |
| 5M420N48XB13 | others - dial |
| 5M420N48XS13 | others - dial |
| 5M425 | others - machine code |
| 84328824 | others - dial ring |
| 84328825 | others - dial ring |
| A190BS | others - push pin |
| 0Z0060B01 | others - crown and stem gasket |
Caliber 5M42
