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Mainspring
For Seiko 4N21-0012
2.80 x 0.210 x 540 x 17.0 mm
GR Reference #: GR7007T
Height (H): 2.8mm
Thickness (T): 0.21mm
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 6CL2 | ||
| Bulova C2527 | BULOVA CASE REFERENCE | |
| Citizen 4-610890 | CITIZEN CASE | |
| Citizen 39-1026 | CITIZE CASE REFERENCE | |
| Citizen 4-164849 | CITIZEN CASE | |
| Citizen 4-242491 | CITIZEN CASE | |
| Citizen 4-601041 | CITIZEN CASE | |
| Citizen 4-610890 | CITIZEN CASE | |
| Citizen 4-G10169 | CITIZEN CASE | |
| Citizen 4-L08735 | CITIZEN CASE | |
| Citizen 4-S98586 | ||
| Citizen 85-2031 | CITIZE CASE REFERENCE | |
| Citizen EA1732 | CITIZE CASE REFERENCE | |
| ETA E01.401 | ||
| Minerva 16 | TIMER | 19 |
| MSR T5 | 19,800 BPH DSS AUTO OFFSET CENTER WHL | 11.5 |
| Omega 155.0020 | OMEGA CASE USES CALIBER 711 | |
| Omega 166.0218 | OMEGA CASE REFERENCE | |
| Omega 591.0023 | OMEGA CASE USES CALIBER 1350 | |
| Seiko 1N00-1F00 | SEIKO CASE REFERENCE COSERVE 2003/2004 | |
| Seiko 2320-6400 | SEIKO CASE REFERENCE | |
| Seiko 6539-5060 | SEIKO CASE REFERENCE | |
| Seiko 7N47A | USE TECH SHEET FOR 7N42C 7N43C | |
| Seiko 9530-6030 | SEIKO CASE REFERENCE COSERVE 2003/2004 |
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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:
| Movement | Mainspring | Buy |
|---|---|---|
| Mainspring WATCH | 2.80 x 0.220 (0.210) x 560 (540) x 17.0 mm | Buy mainspring |
| Waltham 1857 | 2.80 x 0.220 (0.210) x 560 (540) x 17.0 mm | Buy mainspring |
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