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Mainspring
For Unitas 6445
1.35 x 0.080 x 250 x 7.5 mm
Height (H): 1.35mm
Thickness (T): 0.08mm
Total Length (TL): 250mm
Barrel Diameter (BD): 7.5mm
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 |
|---|---|---|
| A. Schild 1245 | BASCULE WINDING | 10.5 |
| A. Schild 1861 | 21,600 BPH DSS CALENDAR | 11.5 |
| Bulova C814003 14K | BULOVA CASE REFERENCE | |
| Bulova C863038 | BULOVA CASE REFERENCE | |
| Bulova C899175 | ||
| Certina 28-353 | DSS ELEC BIORTHYM | 12.5 |
| Citizen 34-5407 | CITIZE CASE REFERENCE | |
| Citizen 4-069251 | CITIZEN CASE | |
| Citizen 4-E63395 | CITIZEN CASE | |
| Citizen 4-140125 | CITIZEN CASE | |
| Citizen 4-224531 | CITIZEN CASE | |
| Seiko 4N00-F140 | SEIKO CASE 940429 | |
| Citizen 4-225031 | CITIZEN CASE | |
| Citizen 4-230744 | CITIZEN CASE | |
| Citizen 4-351738 | CITIZE CASE REFERENCE | |
| Citizen 4-732464 | CITIZE CASE REFERENCE | |
| Citizen 4-E63395 | CITIZEN CASE | |
| Citizen 4-F45782 | CITIZEN CASE | |
| Seiko Y151-5E00 | SEIKO CASE REFERENCE COSERVE 2003/2004 | |
| Citizen 4-F50735 | CITIZEN CASE | |
| Citizen 4-F62075 | CITIZEN CASE | |
| Citizen 4-K02911 | CITIZE CASE REFERENCE | |
| Bulova C863038 | BULOVA CASE REFERENCE | |
| Citizen 4-S15435 | CITIZE CASE REFERENCE | |
| Citizen 49-2281 | CITIZE CASE REFERENCE | |
| Citizen 49-5824 | CITIZE CASE REFERENCE | |
| Citizen 5930D | QTZ MVMT HANDS SEE BELOW**************** | |
| Citizen 75-2819 | CITIZE CASE REFERENCE | |
| Citizen AC-5902 | CITIZE CASE REFERENCE | |
| Ebosa 700.250 | QUARTZ ANALOG SMALL SEC HAND | 10.5 |
| Felsa 415 | AUTOMATIC-SWEEP SECOND | 11.5 |
| Seiko Y151-5E00 | SEIKO CASE REFERENCE COSERVE 2003/2004 | |
| Gruen 224SS | 6.75 x 8 | |
| Gruen 406SS | MECHANICAL MVMT--NOT THE SAME AS GRUEN 406 | 10.5 x 11.5 |
| Mido 3657 | MIDO CASE REFERENCE | |
| Omega 166.0067 | OMEGA CASE - USES CALIBER 565 | |
| Omega 345.0223 | ||
| Omega 596.050 | OMEGA CASE USES CALIBER 1380 | |
| Omega 7660 | OMEGA CASE USES CALIBER 650 | |
| Omega 795.1203 | OMEGA CASE USES CALIBER 1456=ETA 976.001 | |
| Pulsar W307 | ||
| Seiko 1400-7720 | SEIKO CASE REFERENCE | |
| Seiko 2C21-5580 | SEIKO CASE REFERENCE COSERVE 2003/2004 | |
| Seiko 2E20-5610 | SEIKO CASE REFERENCE COSERVE 2003/2004 | |
| Seiko 2F50-567H | SEIKO CASE REFERENCE | |
| Seiko 4N00-F140 | SEIKO CASE 940429 | |
| Seiko 5421-5240 | SEIKO CASE REFERENCE | |
| Seiko 6217-8001 | SEIKO CASE REFERENCE | |
| Seiko 8223-5B06 | SEIKO CASE 08/12/98 | |
| Seiko 8229-500A | SEIKO CASE REFERENCE | |
| Seiko CHAMP850 | CALENDAR DSS | 10.5 |
| Seiko V511-8030 | LORUS CASE REFERENCE | |
| Seiko V810-5480 | SEIKO CASE REFERENCE | |
| Seiko Y151-5E00 | SEIKO CASE REFERENCE COSERVE 2003/2004 | |
| Slava 2427 | 21J DSS AUTO DAY DATE, 27.4MM, 18,000 BPH, DOUBLE BARREL (42H) | 13 |
| Waltham VANGUARD | ||
| Wittnauer 8FF | REG & SS |
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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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