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Mainspring
For Seiko 4N20-0400
1.05 x 0.090 x 220 x 6.5 mm
Height (H): 1.05mm
Thickness (T): 0.09mm
Total Length (TL): 220mm
Barrel Diameter (BD): 6.5mm
End Type: Manual
To look for similar mainsprings that exactly match a specific dimension, select it from the links above.
GR Approximation
This mainspring does not have a GR reference. The following GR mainsprings are the closest fit, when values differ the exact value is shown brackets for reference:
Movement Listing
This mainspring is used by the following movements:
| Movement | Description | Ligne |
|---|---|---|
| Bulova N103 | BULOVA 2293.10 (LED) | |
| Seiko B004-4000 | SEIKO CASE 08/12/98 | |
| Citizen 4-099907 | CITIZE CASE REFERENCE | |
| Citizen 4-860144 | CITIZEN CASE | |
| Otero 1412 | 11.5 | |
| Seiko 6309-5001 | SEIKO CASE REFERENCE | |
| Seiko 7009-210B | SEIKO CASE 08/12/98 | |
| Seiko 7N82-0530 | SEIKO CASE 971201 | |
| Seiko B004-4000 | SEIKO CASE 08/12/98 | |
| Seiko Y590-0590 | PULSAR CASE REFERENCE |
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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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