ETA 1220 – interchangeable spare parts

ETA 1220 movement

Which spare parts fit the ETA 1220 movement? For every part you can see which other calibers use the same part according to the original interchangeability list.

1Parts with interchange data

1Calibers sharing parts

Note: We have compiled this overview to the best of our knowledge and belief, based on the original interchangeability lists of ETA and the original spare-part labels. All information has been carefully checked but is provided without guarantee. Please verify the interchangeability yourself before fitting, especially the height, diameter and execution of the part.

🔧 Interchangeable parts

Part no.	Description	Also fits
301	Regulator for flat hairspring	according to original label ETA 1000

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 1220 (height × diameter × thickness × length) and matching mainspring in our shop:

ETA 1220: 1.25 × 8.0 × 0.10 × 260 mm (GR 3108)

🔗 Movements sharing the most parts

ETA 1000 (1 parts)

→ All calibers of ETA

❓ Frequently asked questions

Which ETA 1220 spare parts also fit other movements?

For the ETA 1220, 1 part numbers are listed as interchangeable. Together they fit 1 other calibers – the table below shows which part fits which movement.

Which movements share the most parts with the ETA 1220?

The most shared parts: ETA 1000 (1 parts).

Which mainspring fits the ETA 1220?

According to the Générale Ressorts catalogue (height × diameter × thickness × length): 1.25 × 8.0 × 0.10 × 260 mm (GR 3108, hand-wound, normal end hook).