The Seiko 7N42-0AS0 is a watch model based on the 7N42 movement.
Parts List
| 270A03JN02 | crystal - crystal |
| 8M40C5SNS0 | crown - crown |
| 8M40C5SNG0 | crown - crown (3h) |
| 0F260BA1S | case back gasket - case back gasket |
| 31D2AZ | band - band |
| 31D2BZ | band - band |
| 31D3AZ | band - band |
| 31D3BZ | band - band |
| 3AA125F1ANG | others - second hand |
| 1AC080A1BNG | others - hour hand |
| 3AA125F1ANS | others - second hand |
| 2AF115A1BNG | others - minute hand |
| 2AE115L0BNS | others - minute hand |
| 1AB080A3BNG | others - hour hand |
| 1AF080A1BNG | others - hour hand |
| 1AB080A3BNS | others - hour hand |
| 1AC080A1BNS | others - hour hand |
| 1AF080A1BNS | others - hour hand |
| 2AB115A3BNG | others - minute hand |
| 2AB115A3BNS | others - minute hand |
| 2AC115A1BNS | others - minute hand |
| 2AF115A1BNS | others - minute hand |
| 1AE080L0BNG | others - hour hand |
| 1AE080L0BNS | others - hour hand |
| A100BS | others - push pin (for mb) |
| 0878580 | others - date dial |
| 7N420BJ0XB13 | others - dial |
| 7N420BJ0XG14 | others - dial |
| 7N420BJ0XL13 | others - dial |
| 7N420BJ0XS13 | others - dial |
| 7N420BJ0XS23 | others - dial |
| 7N420BJ0XS33 | others - dial |
| 7N420BK0XB13 | others - dial |
| 7N420BK0XG14 | others - dial |
| 7N420BK0XL13 | others - dial |
| 7N420BK0XS13 | others - dial |
| 7N420BK0XS23 | others - dial |
| 7N420BK0XS33 | others - dial |
| 7N420BL0XB13 | others - dial |
| 7N420BL0XG14 | others - dial |
| 7N420BL0XG24 | others - dial |
| 7N420BL0XL13 | others - dial |
| 7N420BL0XS13 | others - dial |
| 7N420BL0XS23 | others - dial |
| 7N420BM0XB13 | others - dial |
| 7N420BM0XG14 | others - dial |
| 7N420BM0XG24 | others - dial |
| 7N420BM0XS13 | others - dial |
| 7N420BM0XS23 | others - dial |
| 7N420BM0XS33 | others - dial |
| 7N423 | others - machine code |
| 0351892 | others - winding stem |
| 82738200 | others - case ring |
| 7N420AS001A | others - case |
| 7N420AS0 | others - case back |
| 7N420AS002A | others - case |
| 7N420AS003A | others - case |
| AC006BAD1 | others - crown and stem gasket |
| 2AE115L0BNG | others - minute hand |
| 2AC115A1BNG | others - minute hand |