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Omega – mainsprings for all calibers
284 calibers with mainspring dimensions
Choose the caliber of your Omega 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
Omega 0–99
- 1 T 17
- 8
- 8 SC
- 8.1 Bag
- 9
- 10
- 11,5
- 11,5 - 160
- 11,5 - 210
- 11.7
- 12 SF
- 12" 003
- 12,5 T 7
- 12,6
- 12.3 - 123 F
- 12.5
- 12.5 T 1-T2
- 12.48
- 12.50
- 13 NN
- 13"
- 13". 003 NN
- 13,5 - 240
- 13.5 R AM
- 13.5 R SC
- 14.8
- 14.8 F
- 17 A
- 17 B
- 17 D
- 17 L
- 17 LB
- 17 NN
- 17 R
- 17 T 2
- 17,2
- 17,8 - 300
- 17-003
- 17.11
- 17.19 B
- 17.50 PC. AM. 17
- 17.80 R
- 17.95 M
- 18
- 18 P
- 18 P Chr
- 18 PB
- 18 SPB
- 18" SB
- 18"" BLN
- 18.003
- 18.5
- 18.19
- 18.20 T 2
- 19 A
- 19 B
- 19 D
- 19 LBI
- 19 LBN
- 19 LOC 1
- 19 LP
- 19 M
- 19 NN
- 19 NN 21 J
- 19 T 1
- 19"
- 19" LB
- 19" NN. BCN/19 BCN
- 19". BLN
- 19". SB
- 19.003
- 19.4
- 19.4 S
- 19.4 T 2
- 19.45
- 19.602
- 19.1003
- 20 F
- 20 T 2
- 21
- 21.7
- 23,4 71
- 23,4 SC
- 23,4 SC T 1
- 23.4
- 23.5
- 23.7
- 23.7 T
- 23.7 T 1-2-3
- 23.7 TLTM
- 23.40 SC
- 23.45
- 25 PC
- 25 SC
- 25.5
- 25.5 PS/26,5 PS
- 26.5 2003
- 26.5 T 1
- 26.5 T 2 - T 3
- 26.50
- 26.50 Aut
- 26.50 PC
- 27
- 27 C 12
- 27 chrono
- 27 D1. PC
- 27 T 1
- 27 T 2
- 27.90 RA Aut
- 27.90 SC
- 27.96 NN
- 28
- 28 mm
- 28 PC
- 28 SC
- 28,9 ch T 2
- 28.10 Aut
- 28.10 RA
- 28.10 T 2
- 28.10-340
- 28.17
- 30
- 30 N
- 30 RG
- 30 SCT (28030T2SC)
- 30 T
- 30 T3 SC
- 30 T 1
- 30 T 1 SC
- 30 T 2
- 30 T 2 PC
- 30 T 2 PC 260
- 30 T 2 RG
- 30 T 2 SC PC
- 30 T 2 SC RG
- 30 T 3
- 30 T 4
- 30 T 4 SC
- 30 TR
- 30.5
- 30.10 RA Aut
- 30.10 T 1 RA Aut
- 31.5
- 33.3
- 33.3 chr. T 1
- 33.3 chrono
- 33.3 T 5 CH
- 33.3 T 6 PC
- 33.3-4
- 33.5
- 35 M
- 35.5
- 35.5/2003
- 36.5
- 37.5
- 37.5 2003
- 37.5 T1/37.5 Tl 062
- 37.6
- 37.6 Sav
- 38.5
- 38.5 T 1
- 39 chrono
- 39.1
- 39.1 T 1
- 39.5
- 40 T 2
- 40,6/40,6 T 2
- 40.1
- 40.6 16 LIP
- 40.6 18 LIP
- 43
- 43 B
- 43 T 1
- 43.15
- 43.15 NN
Omega 100–199
Omega 200–299
- 210 à 213
- 220
- 224
- 230
- 231
- 240 à 244
- 250
- 251
- 252
- 253
- 260
- 261
- 262
- 265
- 265 T 4
- 266
- 267
- 268
- 269
- 280 No 1208
- 281
- 282
- 283 (30 SC T 3 PC AM)
- 284
- 286
Omega 300–399
- 301
- 302
- 310
- 311
- 312
- 320. 321
- 330 Aut.,330 Seamaster
- 341 à 344 Aut
- 344 Seamaster Aut
- 350 à 355 Aut
- 360
- 361
- 370
- 371
- 372
- 380
- 381
Omega 400–499
Omega 500–599
Omega 600–699
Omega 700–799
Omega 5000–5099
Omega 5400–5499
Omega Other