Unitas 6425 – interchangeable spare parts
Unitas (UT) 6425 movement
Which spare parts fit the Unitas 6425 movement? For every part you can see which other calibers use the same part according to the original interchangeability list.
🔧 Interchangeable parts
Source: original interchangeability lists of Unitas (UT) (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 Unitas 6425 (height × diameter × thickness × length) and matching mainspring in our shop:
🔗 Movements sharing the most parts
- Unitas 6426 (47 parts)
- Unitas 6410N (41 parts)
- Unitas 6325 (40 parts)
- Unitas 6326 (40 parts)
- Unitas 6411N (40 parts)
- Unitas 6412N (40 parts)
- Unitas 6410 (36 parts)
- Unitas 6411 (36 parts)
- Unitas 6412 (36 parts)
- Unitas 6427 (36 parts)
- Unitas 6310N (32 parts)
- Unitas 6311N (32 parts)
- Unitas 6312N (32 parts)
- Unitas 6415N (31 parts)
- Unitas 6428 (31 parts)
- Unitas 6380 (29 parts)
❓ Frequently asked questions
Which Unitas 6425 spare parts also fit other movements?
For the Unitas 6425, 36 part numbers are listed as interchangeable. Together they fit 52 other calibers – the table below shows which part fits which movement.
Which movements share the most parts with the Unitas 6425?
The most shared parts: Unitas 6426 (47 parts), Unitas 6410N (41 parts), Unitas 6325 (40 parts).
Which mainspring fits the Unitas 6425?
According to the Générale Ressorts catalogue (height × diameter × thickness × length): 1.75 × 11.5 × 0.135 × 360 mm (GR 5171, hand-wound, normal end hook).
🛠️ 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 ›
Original Super Luminova Thinner A61 for Lume Watch Hands, 1 g13,90 € incl. VAT *View item ›