The Seiko 5M42-0A20 is a watch model based on the 5M42 movement.
Parts List
| 280P03TNC3 | crystal |
| 280P03TN | crystal |
| 40MF4NA1 | crown - crown |
| 40MF4NK1 | crown - crown |
| FH2980B0A | case back gasket - case back gasket |
| 86177921 | crystal gasket - plastic gasket for crystal |
| 86179411 | bezel gasket - plastic gasket for bezel |
| 80601367 | pusher - button |
| 80601361 | pusher |
| EC0060B01 | pusher - pusher gasket |
| 80602741 | pusher - button |
| 43J9LG | band - band |
| 43J9AG | band - band |
| 43J9JG | band - band |
| 43J9CG | band - band |
| 43J9LG-LKG | band - link |
| 43J9AG-LKS | band - link |
| 43J9CG-LKG | band - link |
| 43J9JG-LK5 | band - link |
| H00P14WA01G | clasp - clasp |
| 43J9JG-PB1 | clasp - parts for buckle |
| 43J9CG-BK2G | clasp - buckle |
| 43J9CG-PB1 | clasp - parts for buckle |
| 43J9LG-PB1 | clasp - parts for buckle |
| 43J9JG-BKK | clasp - buckle |
| 43J9LG-BK2G | clasp - buckle |
| 43J9AG-BK2G | clasp - buckle |
| 43J9AG-PB1 | clasp - parts for buckle |
| 2AB120L6BAE | others - minute hand |
| 2AB120L6BAF | others - minute hand |
| 2AB120L6BAJ | others - minute hand |
| 2AB120L6BAC | others - minute hand |
| 1AB075L6BAE | others - hour hand |
| 1AB075L6BAF | others - hour hand |
| 1AB075L6BAJ | others - hour hand |
| 1AB075L6BAC | others - hour hand |
| 3AA125F0ANG | others - second hand |
| 3AA125F0ANS | others - second hand |
| 81400709 | others - button spring clip |
| 81350540 | others - button spring |
| 5M420A20SQZ | others - case |
| 0351651 | others - winding stem |
| 5M420A20SQ | others - case |
| 86520102 | others - decorative plate |
| 82289324 | others - bezel |
| 5M420A20 | others - case back |
| 0866640 | others - holding ring for dial |
| 0878729 | others - date dial |
| 0878732 | others - date dial |
| 43J9AG-EPS | others - endpiece |
| 5M420A20SUZ | others - case |
| 5M420A20SU | others - case |
| 86520101 | others - decorative plate |
| 5M420A20XB14 | others - dial |
| 5M420A20XS13 | others - dial |
| 5M420A28XB14 | others - dial |
| 5M420A28XS13 | others - dial |
| 5M420H80XS14 | others - dial |
| 5M420H88XL13 | others - dial |
| 5M420H88XR13 | others - dial |
| 5M420H88XS14 | others - dial |
| 5M420H88XY13 | others - dial |
| 5M425 | others - machine code |
| A180BS | others - push pin |
| 43J9LG-EPG | others - endpiece |
| 43J9JG-EP3 | others - endpiece |
| 43J9CG-EPG | others - endpiece |
| 0Z0060B01 | others - crown and stem gasket |
| 81400829 | others - button spring clip |
Caliber 5M42
