The Seiko 5M42-0C30 is a watch model based on the 5M42 movement.
Parts List
| 280PX7TNC3 | crystal - crystal |
| 280PX7TN | crystal |
| 1E55B6SNG1 | crown - crown |
| 1E55B6SNW1 | crown - crown |
| 0Z3114B0 | case back gasket |
| FH2980B0A | case back gasket - case back gasket |
| 86177921 | crystal gasket - plastic gasket for crystal |
| EC0060B01 | pusher - pusher gasket |
| 80602749 | pusher - button (2h) |
| 80602741 | pusher - button |
| 43W9AG | band - band |
| 43W9JG | band - band |
| 43W9AG-LKS | band - link |
| 43W9JG-LKS | band - link |
| 43W9JG-BK2S | clasp - buckle |
| 43W9JG-PB1 | clasp - parts for buckle |
| 43W9AG-BK2S | clasp - buckle |
| 43W9AG-PB1 | clasp - parts for buckle |
| 2AB110L0BTS | others - minute hand |
| 1AB075L0BTS | others - hour hand |
| 3AX120FMANB | others - second hand |
| 3AX120F0ASF | others - second hand |
| 1AB075S2BCA | others - hour hand |
| 81400709 | others - button spring clip |
| 81350540 | others - button spring |
| 5M420C306YZ | others - case |
| 81332899 | others - bezel spring |
| 0866639 | others - holding ring for dial |
| 0878729 | others - date dial |
| 0878730 | others - date dial |
| 43W9AG-EPS | others - endpiece |
| 5M420C306Y | others - case |
| 86312004 | others - rotating bezel |
| 0Z3114B02 | others - rotating bezel gasket |
| 5M420C3061Z | others - case |
| 86312009 | others - rotating bezel |
| 5M420C30 | others - case back |
| 5M420E08XB13 | others - dial |
| 5M420E10XE14 | others - dial |
| 5M420E18XE14 | others - dial |
| 5M425 | others - machine code |
| 84325904 | others - dial ring |
| 84325905 | others - dial ring |
| A200CS | others - push pin |
| 0A0150B0A | others - crown and stem gasket |
| 89995390 | others - pusher spacer |
| 81400829 | others - button spring clip |
| 2AB120S0BCA | others - minute hand |
Caliber 5M42
