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Mainspring
For Seiko 1F21-5A00
1.30 x 0.075 x 275 x 7.0 mm
Height (H): 1.3mm
Thickness (T): 0.075mm
Total Length (TL): 275mm
Barrel Diameter (BD): 7mm
End Type: Auto
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 C877518 | ||
| Citizen 35-2969 | CITIZE CASE REFERENCE | |
| Seiko Y481-2040 | ||
| Citizen 35-8061 | CITIZE CASE REFERENCE | |
| ETA 612 | 3.25 x 10 | |
| Citizen 4-340426 | CITIZEN CASE | |
| Seiko 1270-5090 | SEIKO CASE REFERENCE | |
| Citizen 4-919912 | CITIZE CASE REFERENCE | |
| Citizen 4-S43765 | CITIZEN CASE | |
| Citizen 4-Y66967 | CITIZEN CASE | |
| Seiko 5M42-0L20 | SEIKO | |
| Citizen 49-0482 | CITIZE CASE REFERENCE | |
| Urofa 11 | 17 JL | 5.5 |
| Citizen 64-9309 | CITIZE CASE REFERENCE | |
| Citizen 4-Y66967 | CITIZEN CASE | |
| Citizen 74-7289 | CITIZE CASE REFERENCE | |
| Citizen AC-5142 | CITIZE CASE REFERENCE | |
| ETA 612 | 3.25 x 10 | |
| Omega 18972 | OMEGA CASE USES CALIBER 483 | |
| Seiko 1100-5060 | SEIKO CASE REFERENCE | |
| Seiko 1270-5090 | SEIKO CASE REFERENCE | |
| Seiko 1E20-5620 | SEIKO CASE REFERENCE | |
| Seiko 2906-049A | SEIKO CASE REFERENCE | |
| Seiko 2Y00-5G09 | SEIKO CASE REFERENCE | |
| Seiko 4J81-0AA0 | SEIKO CASE REFERENCE COSERVE 2003/2004 | |
| Seiko 4N00-7110 | SEIKO CASE REFERENCE COSERVE 2003/2004 | |
| Seiko 5M42-0L20 | SEIKO | |
| Seiko 6020-5310 | SEIKO CASE REFERENCE | |
| Seiko 7779-6000 | SEIKO CASE REFERENCE | |
| Seiko 7S26-2080 | SEIKO CASE 971201 | |
| Seiko 8123-8000 | SEIKO CASE REFERENCE | |
| Seiko Y481-2040 | ||
| Urofa 11 | 17 JL | 5.5 |
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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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