Waltham – mainsprings for all calibers
87 calibers with mainspring dimensions
Choose the caliber of your Waltham 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
Waltham 0–99
- 0-3/0 2228
- 1-OS 2216
- 4 L 400-2240
- 5-581
- 5-681-A
- 5-781
- 6 1/2 L 2239
- 6 3/4 L 2244
- 6 3/4-8 L 2251
- 6 S 2215
- 6 S 2217
- 6 S 2219
- 6-481
- 6-681
- 6-981
- 6/O 2226
- 6/O CD 2248
- 6/O S 2235
- 6/OB
- 6/OC 2248
- 7 1/2 L 2236
- 7 1/4 L 2238
- 8 3/4 L 2242
- 8 3/4 L 2253
- 8-881
- 9 L 2233
- 10 L 2229
- 10 S 2212
- 10 S 2214
- 12 S 2224 A
- 12 S col. B 2237
- 14 S 2209
- 14 S 2210
- 14 S 2225
- 14" 2208
- 14/10 2234
- 16 S 1899
- 16 S 1908
- 16 S 2218
- 16 S 2227
- 16 S 2246
- 16 S 2247
- 16 S-31
- 18 S 2200
- 18 S 2201
- 18 S 2202
- 18 S 2203
- 18 S 2204
- 18 S 2205
- 18 S 2206
- 18 S 2207
- 18" 2205
- 69 M
- 75 A
Waltham 100–199
Waltham 300–399
Waltham 400–499
Waltham 500–599
Waltham 600–699
Waltham 700–799
Waltham 800–899
Waltham 1100–1199
Waltham 1600–1699
Waltham 1900–1999
Waltham 2200–2299
Waltham Other