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Mainspring
For Unitas 166
2.10 x 0.200 x 490 x 16.5 mm
Height (H): 2.1mm
Thickness (T): 0.2mm
Total Length (TL): 490mm
Barrel Diameter (BD): 16.5mm
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 |
|---|---|---|
| Seiko 7T32-7A39 | SEIKO CASE REFERENCE | |
| A. Schild 728 | 8.75 | |
| Citizen 4-079957 | CITIZEN CASE | |
| Citizen 4-G00431 | CITIZEN CASE | |
| A. Schild 728 | 8.75 | |
| Citizen BZ9014 | CITIZE CASE REFERENCE | |
| ETA 556.031 | QUARTZ-ANALOG-W/O SEC. | 7.75 |
| Omega 5781 | OMEGA CASE USES CALIBER 650 | |
| Seiko 2P21-5D00 | SEIKO CASE REFERENCE COSERVE 2003/2004 | |
| Seiko 7T32-7A39 | SEIKO CASE REFERENCE | |
| Seiko Y100-5980 | SEIKO CASE REFERENCE | |
| Seiko Y480-7190 | PULSAR CASE REFERENCE | |
| Standard 20 | 4 x 6 |
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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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