The Seiko 5M42-0K20 is a watch model based on the 5M42 movement.
Parts List
| 290PX7JC0B | crystal - crystal |
| 290PX7JC0C | crystal - crystal |
| 8M55A2SNW1 | crown - crown |
| 86565320 | crystal gasket - plastic gasket for crystal |
| 0G310BA16 | bezel gasket - case back gasket |
| EC0060B01 | pusher - pusher gasket |
| A40A05SMS0A | pusher - button |
| 71A5ZZ-LK2 | band - link |
| 71A6ZZ-LK2 | band - link |
| 71A5ZZ | band - band |
| 71A6ZZ | band - band |
| 7C26WZ | band - rubber band |
| 71A5ZZ-BKF | clasp - buckle |
| 71A5ZZ-PB2 | clasp - parts for buckle |
| 71A6ZZ-BKF | clasp - buckle |
| 71A6ZZ-PB2 | clasp - parts for buckle |
| 1AX085F8BSS | others - hour hand |
| 2AX120FPBSS | others - minute hand |
| 3AA120FMANS | others - second hand |
| 83200273 | others - button spring clip |
| 81351630 | others - button spring |
| AD006BAD1 | others - crown and stem gasket |
| 81504429 | others - screw |
| 84328324 | others - dial ring |
| 84328325 | others - dial ring |
| A180BS | others - push pin |
| 0351651 | others - winding stem |
| 5M420K20N8 | others - case |
| 8991740B | others - bezel |
| 5M420K20N8A | others - case |
| 8991740C | others - bezel |
| 5M420K20N8B | others - case |
| 8991740D | others - bezel |
| 5M420K20N8C | others - case |
| 8991740A | others - bezel |
| 5M420K20N8D | others - case |
| 8991740E | others - bezel |
| 5M420K20N8E | others - case |
| 0866646 | others - holding ring for dial |
| 0878729 | others - date dial |
| 0878730 | others - date dial |
| 5M420M08XB13 | others - dial |
| 5M420M08XS13 | others - dial |
| 5M428 | others - machine code |
| 290PX7JC0B | crystal - crystal |
| 290PX7JC0C | crystal - crystal |
| 8M55A2SNW1 | crown - crown |
| 86565320 | crystal gasket - plastic gasket for crystal |
| 0G310BA16 | bezel gasket - case back gasket |
| EC0060B01 | pusher - pusher gasket |
| A40A05SMS0A | pusher - button |
| 71A5ZZ-LK2 | band - link |
| 71A6ZZ-LK2 | band - link |
| 71A5ZZ | band - band |
| 71A6ZZ | band - band |
| 7C26WZ | band - rubber band |
| 71A5ZZ-BKF | clasp - buckle |
| 71A5ZZ-PB2 | clasp - parts for buckle |
| 71A6ZZ-BKF | clasp - buckle |
| 71A6ZZ-PB2 | clasp - parts for buckle |
| 1AX085F8BSS | others - hour hand |
| 2AX120FPBSS | others - minute hand |
| 3AA120FMANS | others - second hand |
| 83200273 | others - button spring clip |
| 81351630 | others - button spring |
| AD006BAD1 | others - crown and stem gasket |
| 81504429 | others - screw |
| 84328324 | others - dial ring |
| 84328325 | others - dial ring |
| A180BS | others - push pin |
| 0351651 | others - winding stem |
| 5M420K20N8 | others - case |
| 8991740B | others - bezel |
| 5M420K20N8A | others - case |
| 8991740C | others - bezel |
| 5M420K20N8B | others - case |
| 8991740D | others - bezel |
| 5M420K20N8C | others - case |
| 8991740A | others - bezel |
| 5M420K20N8D | others - case |
| 8991740E | others - bezel |
| 5M420K20N8E | others - case |
| 0866646 | others - holding ring for dial |
| 0878729 | others - date dial |
| 0878730 | others - date dial |
| 5M420M08XB13 | others - dial |
| 5M420M08XS13 | others - dial |
| 5M428 | others - machine code |
Caliber 5M42
