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Mainspring
For Seiko 8Y21-0300
1.50 x 0.070 x 220 x 6.0 mm
GR Reference #: GR4058
Height (H): 1.5mm
Thickness (T): 0.07mm
Total Length (TL): 220mm
Barrel Diameter (BD): 6mm
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 |
|---|---|---|
| Bulova 11OWAU | 11.5 | |
| Bulova C868009 | BULOVA CASE REFERENCE | |
| Citizen 4-312449 | CITIZE CASE REFERENCE | |
| Bulova C869040 | BULOVA CASE REFERENCE | |
| Bulova C875161 | BULOVA | |
| Bulova C888005 | BULOVA CASE REFERENCE | |
| Citizen 4-202694 | CITIZEN CASE | |
| Citizen 4-673735 | CITIZEN CASE | |
| Citizen 4-312449 | CITIZE CASE REFERENCE | |
| Citizen 4-673735 | CITIZEN CASE | |
| Bulova C875161 | BULOVA | |
| Citizen 4-L01765 | CITIZEN CASE | |
| Citizen 4-R06098 | CITIZEN CASE | |
| Citizen 44-5291 | CITIZE CASE REFERENCE | |
| Citizen 82-4721 | CITIZE CASE REFERENCE | |
| Dugena 1155 | OSCO 400 | 10.5 |
| Dugena 3308 | 7.75 | |
| Mido 3001 | MIDO CASE REFERENCE | |
| Eterna 1237UT | 12.5 | |
| Bulova C888005 | BULOVA CASE REFERENCE | |
| Mido 3001 | MIDO CASE REFERENCE | |
| Bulova C888005 | BULOVA CASE REFERENCE | |
| Omega 198.112 | OMEGA CASE USES CALIBER 1343 | |
| Seiko 2E20-6139 | SEIKO CASE REFERENCE | |
| Seiko 5E31-6B60 | SEIKO CASE REFERENCE COSERVE 2003/2004 | |
| Seiko N94J-6B50 | SEIKO CASE 951201 |
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Similar Mainspring Listing
This mainspring is similar to that used by the following movements. When values differ the exact value is shown brackets for reference:
| Movement | Mainspring | GR Reference # |
|---|---|---|
| Roamer 431 | 1.40 (1.50) x 0.065 (0.070) x 225 (220) x 6.5 (6.0) mm |
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