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Mainspring
For Zenith 20.5
2.30 x 0.200 x 460 x 16.0 mm
Height (H): 2.3mm
Thickness (T): 0.2mm
Total Length (TL): 460mm
Barrel Diameter (BD): 16mm
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 |
|---|---|---|
| Audemars Piguet 2601 | QUARTZ ANALOG | 4 x 5.25 |
| Bulova C867207 | BULOVA CASE REFERENCE | |
| Citizen 4-181000 | CITIZEN CASE | |
| Seiko 5Y23-5A10 | SEIKO CASE REFERENCE | |
| Citizen 4-224663 | CITIZEN CASE | |
| Seiko 5Y23-5A10 | SEIKO CASE REFERENCE | |
| Citizen 4-957008 | CITIZEN CASE | |
| Fontainemelon 4144 | LEFT SETTING PARTS HT 4.30 M/M | 19 |
| Omega 591.229 | OMEGA CASE USES CALIBER 1387 | |
| Seiko Y481-0580 | SEIKO CASE 08/12/98 | |
| Puw 240 | QUARTZ ANALOG DSS | 10.5 |
| Recta KB | HEIGHT 3.70 | 17 |
| Seiko 5H22-6149 | SEIKO CASE REFERENCE | |
| Seiko 5Y23-5A10 | SEIKO CASE REFERENCE | |
| Seiko 7T32-7F69 | SEIKO ANALOG (TIME CROWN IS LARGER THAN ALARM CROWN) | |
| Seiko Y100-5510 | PULSAR CASE REFERENCE | |
| Seiko Y481-0580 | SEIKO CASE 08/12/98 |
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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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