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Mainspring
For Seiko 8420-5750
1.45 x 0.085 x 240 x 7.5 mm
GR Reference #: GR3930X
Height (H): 1.45mm
Thickness (T): 0.085mm
Total Length (TL): 240mm
Barrel Diameter (BD): 7.5mm
End Type: Auto
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 |
|---|---|---|
| Seiko 7T32-6N20 | SEIKO CASE REFERENCE COSERVE 2003/2004 | |
| Armitron 20/1205 | ||
| Bulova 1432.10 | WITH SWEEP SECOND | |
| Citizen 88-6301 | CITIZE CASE REFERENCE | |
| Bulova 6454.17 | ||
| Universal Geneve 09 | 5.75 | |
| Bulova C860288 | ||
| Bulova C875204 | ||
| Bulova C878008 | BULOVA CASE REFERENCE | |
| Buren 01 | NEGATIVE WIND | 19 |
| Felsa 1561 | 11.5 | |
| Citizen 36-4401 | CITIZE CASE REFERENCE | |
| Juvenia 945 | 11.50 | |
| Citizen 4-225519 | CITIZE CASE REFERENCE | |
| Citizen 61-9612 | CITIZE CASE REFERENCE | |
| Citizen 4-823451 | CITIZEN CASE | |
| Oris 410 | PIN LEVER | 5.25 x 8.5 |
| Citizen 4-982541 | CITIZE CASE REFERENCE | |
| Citizen 4-E61520 | CITIZEN CASE | |
| Citizen 4-E65975 | CITIZEN CASE | |
| Citizen 4-S053013 | ||
| Citizen 4-F46096 | CITIZEN CASE | |
| Citizen 4-K18451 | CITIZEN CASE REFERENCE | |
| Citizen 4-L08808 | CITIZEN CASE | |
| Citizen 4-S053013 | ||
| Citizen 4-S58207 | CITIZEN CASE | |
| Citizen 4-S72242 | CITIZEN CASE | |
| Citizen 4-Y66436 | CITIZEN CASE | |
| Citizen 4-Y68366 | CITIZEN CASE | |
| Citizen 61-9612 | CITIZE CASE REFERENCE | |
| Citizen 88-0060 | CITIZE CASE REFERENCE | |
| Citizen 88-6301 | CITIZE CASE REFERENCE | |
| Croton E3AN | ETA 1080 | 10.5 |
| Eterna SONIC 1550 | ||
| Felsa 1561 | 11.5 | |
| Felsa 184 | COV WDG | 10.5 |
| Guba 10-30 | 11.5 | |
| Hermann Becker 111 | DIRECT CENTER SECOND | 11.5 |
| Juvenia 945 | 11.50 | |
| Omega 105.0004 | OMEGA CASE USES CALIBER 321 | |
| Omega 311.079 | OMEGA CASE USES CALIBER | |
| Omega 386.1232 | OMEGA CASE USES CALIBER 1670 | |
| Omega 611.020 | OMEGA CASE USES CALIBER 483 | |
| Oris 410 | PIN LEVER | 5.25 x 8.5 |
| Parrenin 251 | PIN LEVER | 5.25 x 8.25 |
| Puw 9100 | QUARTZ ANALOG W/O SEC | |
| Ronda 9138 | 21600 BPH-DSS-AUTO | 8.75 |
| Seiko 1004-3160 | SEIKO CASE REFERENCE | |
| Seiko 1600-3090 | SEIKO CASE REFERENCE | |
| Seiko 2626-5030 | SEIKO CASE REFERENCE | |
| Seiko 2P20-5M30 | SEIKO CASE 08/12/98 | |
| Seiko 4336-8000 | SEIKO CASE REFERENCE | |
| Seiko 5932-5190 | SEIKO CASE REFERENCE | |
| Seiko 5Y95-5039 | SEIKO CASE REFERENCE | |
| Seiko 6106-8640 | SEIKO CASE REFERENCE | |
| Seiko 6309-4090 | SEIKO CASE REFERENCE COSERVE 2003/2004 | |
| Seiko 6602-9010 | SEIKO CASE REFERENCE | |
| Seiko 7123-8339 | SEIKO CASE REFERENCE | |
| Seiko 7M12-7A20 | SEIKO CASE REFERENCE COSERVE 2003/2004 | |
| Seiko 7T32-6N20 | SEIKO CASE REFERENCE COSERVE 2003/2004 | |
| Seiko V14J-0A10 | SEIKO CASE REFERENCE COSERVE 2003/2004 | |
| Seiko V515-6570 | SEIKO CASE REFERENCE COSERVE 2003/2004 | |
| Seiko V701-2F39 | ||
| Seiko V811-0220 | SEIKO CASE REFERENCE COSERVE 2003/2004 | |
| Seiko V811-0860 | SEIKO CASE REFERENCE COSERVE 2003/2004 | |
| Seiko V811-2130 | PULSAR CASE REFERENCE | |
| Timex 1021002380 | TIMEX CASE REFERENCE | |
| Universal Geneve 09 | 5.75 |
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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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