ETA 1120 – interchangeable spare parts
ETA 1120 movement
Which spare parts fit the ETA 1120 movement? For every part you can see which other calibers use the same part according to the original interchangeability list.
🛒 Spare parts for ETA 1120 in our shop
🔧 Interchangeable parts
| Part no. | Description | Also fits |
|---|---|---|
| 301ISO 40.301 | Regulator for flat hairspring | |
| 311ISO 70.800 | Upper cap jewel end-piece | |
| 330ISO 70.801 | Lower cap jewel end-piece | |
| 336ISO 70.806 | Upper cap-jewel with end-piece, for escape wheel | |
| 401ISO 51.010 | Stem | |
| 407ISO 31.121 | Clutch wheel | |
| 410ISO 31.120 | Winding pinion | |
| 415ISO 31.020 | Ratchet wheel | |
| 420ISO 31.023 | Crown wheel | |
| 422ISO 81.067 | Crown wheel ring | |
| 425ISO 51.120 | Click | |
| 430ISO 61.080 | Click spring | |
| 435ISO 51.050 | Yoke | |
| 440ISO 61.100 | Yoke spring | |
| 443ISO 51.080 | Setting lever | |
| 443/5443ISO 51.080.06/.01 | Setting lever | |
| 445 | Setting lever spring | |
| 453ISO 31.101 | Intermediate setting wheel |
Source: original interchangeability lists of ETA (checked transcription) and checked original spare-part labels · as of 2026-10-28. Height / execution: the part fits only in this height or execution.
🌀 Matching mainspring
Mainspring dimensions for ETA 1120 (height × diameter × thickness × length) and matching mainspring in our shop:
📄 Technical document
View the original document for ETA 1120 online:
🔗 Movements sharing the most parts
❓ Frequently asked questions
Which ETA 1120 spare parts also fit other movements?
For the ETA 1120, 18 part numbers are listed as interchangeable. Together they fit 29 other calibers – the table below shows which part fits which movement.
Which movements share the most parts with the ETA 1120?
The most shared parts: ETA 1100 (17 parts), ETA 1080 (4 parts), ETA 1093 (4 parts).
Which mainspring fits the ETA 1120?
According to the Générale Ressorts catalogue (height × diameter × thickness × length): 1.50 × 10.5 × 0.13 × 320 mm (GR 4196, hand-wound, normal end hook).
Can I buy spare parts for the ETA 1120?
Yes, Master Watch Parts currently has 1 matching items in stock.
🛠️ For the workshop
Watch Gasket Hytrel I-Ring Seal for Flat Round Mineral Crystals 16-40 mm, H: 0.6, 0.8, 0.85, 1.25, 1.7 mm5,95 € – 9,95 € incl. VAT *View item ›
Red Teflon Hard Gasket For Watch Caseback Multi Size Listing Ø 16-42. Suitable for many brand watches such as Omega, Tissot, Junghans5,95 € – 7,95 € incl. VAT *View item ›
Luminous Pigment for Watch Hands – Swiss Watch Lume, Luminova22,95 € – 52,90 € incl. VAT *View item ›