Hamilton – mainsprings for all calibers
70 calibers with mainspring dimensions
Choose the caliber of your Hamilton movement. The caliber page shows the mainspring dimensions and – if in stock – the matching mainspring from our shop.
Note: We have transcribed this information to the best of our knowledge from the Générale Ressorts mainspring catalogue (GR 2, 1974). All information has been carefully checked but is provided without guarantee. Please check yourself before fitting that the mainspring fits, in particular height, diameter, thickness and length.
⚙️ All calibers
Hamilton 0–99
- 6/0S 2321
- 6/OS 1721
- 6/OS 2521
- 6/OS 2621
- 8/OS 7221
- 12 S 1228-3028
- 12 S 3328
- 12 S 6021
- 12" 917/634
- 12" 3028
- 12/0S 4128
- 14/0-982
- 14/0S 5021
- 16 S 317
- 16 S 318
- 16 S 534
- 16 S 534 B
- 16 S 992 B
- 16" 534
- 16.S. 317
- 16S 15
- 18/0S 2721
- 18S
- 21/OS 2921
- 22/0 6621
- 22/0-911/911 M
- 64 Aut
Hamilton 600–699
- 600
- 601
- 602
- 603
- 604
- 610
- 620 Aut
- 650 Ă 652
- 653
- 654
- 655
- 657
- 658 Aut
- 659
- 660
- 661
- 662 Aut
- 664
- 665 Aut
- 666 Aut
- 667 Aut
- 668 Aut
- 669
- 671
- 672
- 673
- 674
- 675
- 676
- 677 Aut
- 678
- 679 Aut
- 686
- 687
- 688
- 689 Aut
- 690 Aut
- 691 Aut
- 692 Aut
Hamilton 700–799
Hamilton 900–999
Hamilton Other