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Mainspring
For Seiko 8420-7080
1.45 x 0.085 x 240 x 7.0 mm
Height (H): 1.45mm
Thickness (T): 0.085mm
Total Length (TL): 240mm
Barrel Diameter (BD): 7mm
End Type: Auto
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 1289 | 5.5 x 7 | |
| Citizen 4-730861 | CITIZEN CASE | |
| Bettlach 8488-74 | 10.5 | |
| Jubilee 4D | 18,000 BPH | |
| Bidlingmaier 120BSC | 12.75 | |
| Bulova 17AB | 17 | |
| Bulova C4344 | BULOVA CASE REFERENCE | |
| Bulova C843022 | 14KT | |
| Jubilee 4D | 18,000 BPH | |
| Citizen 31-7110 | CITIZE CASE REFERENCE | |
| Citizen 37-9930 | CITIZE CASE REFERENCE | |
| Citizen 4-037570 | CITIZEN CASE | |
| Cyma Tavannes 414KA | 10.5 | |
| Citizen 4-140290 | CITIZEN CASE | |
| Citizen 4-221052 | CITIZE CASE REFERENCE | |
| Citizen 4-326911 | CITIZEN CASE | |
| Citizen 4-632541 | CITIZEN CASE | |
| Citizen 4-676408 | CITIZEN CASE | |
| Pulsar YL60A | USE SKO 1F20A HR WHL HT=.95MM; NEW MVT STEM IS TAP 13 | |
| Citizen 4-690885 | CITIZEN CASE | |
| Citizen 45-5679 | CITIZE CASE REFERENCE | |
| Citizen 4-730861 | CITIZEN CASE | |
| Seiko Y580-5080 | PULSAR CASE REFERENCE | |
| Citizen 4-970187 | CITIZEN CASE | |
| Citizen 4-F41621 | CITIZE CASE REFERENCE | |
| Citizen 4-L03334 | CITIZEN CASE | |
| Citizen 4-S058562 | ||
| Omega 161.0018 | OMEGA CASE - USES CALIBER 591 | |
| Citizen 4-S27841 | CITIZEN CASE | |
| Citizen 4-S53973 | CITIZEN CASE | |
| Citizen 45-5679 | CITIZE CASE REFERENCE | |
| Citizen JC-0102 | CITIZE CASE REFERENCE | |
| Citizen 4-S058562 | ||
| Croton AJSN | ETA 1301 | 8.75 |
| Cyma Tavannes 414KA | 10.5 | |
| Citizen 4-730861 | CITIZEN CASE | |
| Elgin 496 | ||
| Gruen 165 | 15JWL | 6.75 x 11 |
| Jubilee 4D | 18,000 BPH | |
| Lip R403 | ||
| Mido 8014 | MIDO CASE REFERENCE | |
| Omega 161.0018 | OMEGA CASE - USES CALIBER 591 | |
| Omega 591.3019 | OMEGA CASE REFERENCE | |
| Osco 65 | DIRECT CENTER SECOND | 10.5 |
| Peseux 171 | 10.5 | |
| Pulsar YL60A | USE SKO 1F20A HR WHL HT=.95MM; NEW MVT STEM IS TAP 13 | |
| Seiko Y960-6020 | PULSAR CASE REFERENCE | |
| Seiko 1140-7050 | SEIKO CASE REFERENCE | |
| Omega 161.0018 | OMEGA CASE - USES CALIBER 591 | |
| Seiko 1600-3260 | SEIKO CASE REFERENCE | |
| Seiko 1N00-6D80 | SEIKO CASE 951201 | |
| Seiko 2F50-0659 | SEIKO CASE | |
| Seiko 5930-5360 | SEIKO CASE REFERENCE | |
| Seiko 5P30-6B70 | SEIKO CASE REFERENCE COSERVE 2003/2004 | |
| Seiko 6532-6050 | SEIKO CASE REFERENCE | |
| Peseux 171 | 10.5 | |
| Seiko 7526-0040 | ||
| Seiko 7F24-6010 | SEIKO CASE REFERENCE | |
| Seiko 7F24-6010 | SEIKO CASE REFERENCE | |
| Seiko 8420-5809 | SEIKO CASE REFERENCE | |
| Seiko V501-5B90 | LORUS CASE REFERENCE | |
| Seiko V515-5310 | ||
| Seiko V701-1K60 | SEIKO CASE REFERENCE COSERVE 2003/2004 | |
| Seiko Y143-8090 | LORUS CASE REFERENCE | |
| Seiko Y580-5080 | PULSAR CASE REFERENCE | |
| Seiko Y960-6020 | PULSAR CASE REFERENCE | |
| Vacheron Constantin 16.75 | 16.75 |
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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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