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Mainspring
For Hamilton 621
1.60 x 0.075 x 240 x 7.0 mm
GR Reference #: GR4437X
Height (H): 1.6mm
Thickness (T): 0.075mm
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.
Movement Listing
This mainspring is used by the following movements:
| Movement | Description | Ligne |
|---|---|---|
| A. Schild 329 | 10.5 | |
| Seiko 2205-0380 | SEIKO CASE REFERENCE | |
| Citizen 35-9301 | CITIZE CASE REFERENCE | |
| Seiko 6127-7010 | SEIKO | |
| Citizen 4-274440 | CITIZEN CASE | |
| Citizen 4-S46764 | CITIZEN CASE | |
| Seiko 1F20-5D50 | SEIKO CASE REFERENCE | |
| Citizen 4-T10225 | CITIZEN CASE | |
| Citizen 82-9587 | CITIZE CASE REFERENCE | |
| Citizen 8620 SCW | QUARTZ ANALOG SS CAL (DAY/DATE) | |
| Heuer 1800 | 12 1/4 | |
| Citizen AF-2990 | CITIZE CASE REFERENCE | |
| ETA 899 | 10.5 | |
| Seiko 1400-7419 | SEIKO CASE REFERENCE | |
| Hamilton 81520 | HAMILT CASE REFERENCE | |
| Heuer 1800 | 12 1/4 | |
| Luch 1809 | BPH 17JL DSS | 8 |
| ETA 899 | 10.5 | |
| New Factory Tavennes 45 | CALENDAR | 10.5 |
| Ronda 5211 | PIN LEVER KIF 9X13X7 MSPG | 8.75 |
| Citizen AF-2990 | CITIZE CASE REFERENCE | |
| Seiko 1400-7419 | SEIKO CASE REFERENCE | |
| Seiko 1F20-5120 | SEIKO CASE REFERENCE COSERVE 2003/2004 | |
| Seiko 1F20-5D50 | SEIKO CASE REFERENCE | |
| Seiko 2205-0380 | SEIKO CASE REFERENCE | |
| Seiko 5P31-600A | SEIKO CASE REFERENCE | |
| Seiko 6127-7010 | SEIKO | |
| Seiko 7006-7240 | SEIKO CASE REFERENCE | |
| Seiko 7N89-0211 | SEIKO CASE | |
| Seiko V782-6C60 | SEIKO CASE 971129 | |
| Seiko Y102-5000 | PULSAR CASE REFERENCE |
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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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