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Mainspring
For Seiko 1F21-5A20
2.80 x 0.190 x 540 x 17.0 mm
GR Reference #: GR6988T
Height (H): 2.8mm
Thickness (T): 0.19mm
Total Length (TL): 540mm
Barrel Diameter (BD): 17mm
End Type: T
To look for similar mainsprings that exactly match a specific dimension, select it from the links above.
Movement Listing
This mainspring is used by the following movements:
| Movement | Description | Ligne |
|---|---|---|
| Bulova 3426 | BULOVA CASE REFERENCE | |
| Buren 546 | AUTOMATIC-CENTER SECOND-RESERVE INDICATOR | 11.5 |
| Omega 1424 | ||
| Citizen 4-830750 | CITIZEN CASE | |
| Citizen 4-831420 | CITIZEN CASE | |
| Citizen 4-H21432 | CITIZEN CASE REFERENCE | |
| Citizen 4-Y65073 | CITIZEN CASE | |
| Jubilee 1461 | MECH MVMT | |
| Omega 1424 | ||
| Seiko 7430-7030 | SEIKO CASE REFERENCE | |
| Unitas 112 | 17 | |
| Venus 106 | 10.5 |
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Similar Mainspring Listing
This mainspring is similar to the mainspring used by the following movements. A similar mainspring differs slightly in one or more dimensions but may possibly still work as a replacement. When values differ the exact value is shown brackets for reference:
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