The Seiko 7T42-7A40 is a watch model based on the 7T42 movement.
Parts List
| 295W30JN01 | crystal |
| 40ME2NS5 | crown |
| 35ML0NA1 | crown |
| 0351580 | crown - winding stem |
| 40ME2NA4 | crown |
| 35ML0NS1 | crown |
| 0A2800B01 | case back gasket |
| 86572420 | crystal gasket - plastic gasket for crystal |
| 86179271 | bezel gasket - plastic gasket for bezel |
| 80603389 | pusher |
| 80603381 | pusher |
| Z1630S-LKS | band - link |
| Z1630S | band |
| BQJ53G | band - leather band |
| BQJ56G | band - leather band |
| BQJ56S | band - leather band |
| Z1630C-LKG | band - link |
| Z1630G-LKG | band - link |
| Z1630G | band |
| Z1630C | band |
| Z1630C-BK2S | clasp - clasp |
| Z1630G-PB1 | clasp - parts for buckle/clasp |
| Z1630S-BK2S | clasp - clasp |
| Z1630C-PB1 | clasp - parts for buckle/clasp |
| Z1630G-BK2G | clasp - clasp |
| Z1630S-PB1 | clasp - parts for buckle/clasp |
| 03Y24AGH | hand - hour hand |
| 03Y24AJH | hand - small hand (6h) |
| 04EC4CG | hand - sub hand |
| 04EC4CJ | hand - sub hand |
| 0866599 | others - holding ring for dial |
| 0878527 | others - date dial |
| 0878528 | others - date dial |
| 7T424 | others - machine code |
| 7T427A40 | others - case back |
| 7T427A4061 | others - case |
| 7T427A4075 | others - case |
| 7T427A4098 | others - case |
| 7T427A6LX914 | others - dial |
| 7T427A6LX934 | others - dial |
| 7T427A6LXG14 | others - dial |
| 82280583 | others - bezel |
| 82280584 | others - bezel |
| 84322383 | others - dial ring |
| 84322384 | others - dial ring |
| 86510089 | others - conducting plate |
| A190BS | others - push pin |
| 03E48AG | others - small hand(12h) |
| 81400709 | others - button spring clip |
| 81350540 | others - button spring |
| EG0060B01 | others - button gasket |
| Z1630G-EPG | others - endpiece |
| Z1630S-EPS | others - endpiece |
| Z1630C-EPG | others - endpiece |
| 03E48AJ | others - (hand(special)) |
| 0Z0060B01 | others - crown and stem gasket |
| 12SCA6RR | others - second hand |
| 12CD6LGM | others - minute hand |
| 12CD6LGH | others - hour hand |
| 12CD6KGM | others - minute hand |
| 12CD6KGH | others - hour hand |
Caliber 7T42
Other models with the same movement
| 7T42-6A00 |
| 7T42-6A0A |
| 7T42-6A0B |
| 7T42-6A10 |
| 7T42-6A20 |
| 7T42-6A49 |
| 7T42-6A50 |
| 7T42-6A5A |
| 7T42-6A60 |
| 7T42-6A6A |
| 7T42-7A00 |
| 7T42-7A10 |
| 7T42-7A20 |
| 7T42-7A2A |
| 7T42-7A39 |
| 7T42-7A4A |
| 7T42-7A4B |
| 7T42-7A50 |
| 7T42-7A5A |
| 7T42-7A5B |
| 7T42-F010 |
| 7T42-F01A |