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Mainspring
For Seiko 4N21-0270
1.20 x 0.100 x 320 x 9.0 mm
GR Reference #: GR2921
Height (H): 1.2mm
Thickness (T): 0.1mm
Total Length (TL): 320mm
Barrel Diameter (BD): 9mm
End Type: Manual
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 |
|---|---|---|
| Junghans 687.70 | 11.5 | |
| Baumgartner 911-31/7 | 21,600 BPH W/OR W/O DSS PIN LEVER CALD DAY/DATE W/CORR ADJ H | 8.75 |
| Belstaff 6G1B | 7 JEWEL 19,800 BPH SHOCK | 6.75 x 8 |
| Seiko 6F28-7000 | SEIKO CASE REFERENCE COSERVE 2003/2004 | |
| Bulova C802023 | BULOVA CASE REFERENCE | |
| Bulova C967551 | BULOVA CASE REFERENCE STYLE #92D25 | |
| Bulova K31 | BULOVA 5AK | |
| Bulova C802023 | BULOVA CASE REFERENCE | |
| Citizen 4-013808 | CITIZEN CASE | |
| Citizen 4-104552 | CITIZEN CASE | |
| Citizen 4-140605 | CITIZE CASE REFERENCE | |
| Citizen 4-167457 | CITIZEN CASE | |
| Citizen 4-231481 | CITIZEN CASE | |
| Citizen 4-274687 | CITIZEN CASE | |
| Citizen 4-286952 | CITIZEN CASE | |
| Citizen 4-330552 | CITIZEN CASE | |
| Citizen 4-720393 | CITIZEN CASE | |
| Citizen 4-799011 | CITIZEN CASE | |
| Citizen 4-940814 | CITIZE CASE REFERENCE | |
| Citizen 4-G14300 | CITIZEN CASE | |
| Citizen 4-H04546 | CITIZEN CASE REFERENCE | |
| Citizen 4-K09770 | CITIZEN CASE | |
| Citizen 4-R08180 | CITIZEN CASE | |
| Citizen 4-R08198 | CITIZEN CASE | |
| Citizen 4-Y64972 | CITIZEN CASE | |
| Citizen 4-Y67611 | CITIZEN CASE | |
| Citizen 74-7491 | CITIZE CASE REFERENCE | |
| Citizen 8560A | QUARTZ-DSS-CALD ANALOG | 10.5 |
| Elgin 808 | 23J | 5.75 x 7 |
| Enicar 1147BD | 11.75 | |
| France Ebauches 3600 | 21,600 DSS | 11.5 |
| Junghans 687.70 | 11.5 | |
| Lemania 1281 | CHRONOGRAPH HOUR RECORDER | 12 |
| Omega 142 | 17 | |
| Omega 17043 | OMEGA USES CALIBER 482/483/580 | |
| Omega 1739 | OMEGA CASE USES CALIBER 700 | |
| Seiko 1428-504A | SEIKO CASE REFERENCE | |
| Seiko 2906-0550 | SEIKO CASE REFERENCE | |
| Seiko 2C21-0290 | SEIKO CASE REFERENCE | |
| Seiko 2F50-5330 | SEIKO CASE REFERENCE | |
| Seiko 2P20-5K90 | SEIKO CASE REFERENCE | |
| Seiko 6F28-7000 | SEIKO CASE REFERENCE COSERVE 2003/2004 | |
| Seiko 7320-5440 | SEIKO CASE REFERENCE | |
| Seiko 7N01-0AK0 | SEIKO CASE REFERENCE COSERVE 2003/2004 | |
| Seiko 8122-6020 | SEIKO CASE REFERENCE | |
| Seiko Y100-5260 | PULSAR CASE REFERENCE | |
| Seiko Y480-6000 | PULSAR CASE REFERENCE | |
| Timex 1005508074 | TIMEX CASE REFERENCE | |
| Waltham 1882 1/S | AMERICAN P/W |
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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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