FHF 745-4 – interchangeable spare parts
FHF 745-4 movement
Which spare parts fit the FHF 745-4 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 FHF (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 FHF 745-4 (height × diameter × thickness × length) and matching mainspring in our shop:
🔗 Movements sharing the most parts
- FHF 74-4 (56 parts)
- FHF 745-4N (53 parts)
- FHF 74-4N (51 parts)
- FHF 74 (49 parts)
- FHF 745 (49 parts)
- FHF 741 (45 parts)
- FHF 74-2 (34 parts)
- FHF 73-4 (23 parts)
- FHF 735-4 (23 parts)
- FHF 73-4N (20 parts)
- FHF 735-4N (20 parts)
- FHF 739-4N (20 parts)
- FHF 72-4 (17 parts)
- FHF 725-4 (17 parts)
- FHF 67 (16 parts)
- FHF 73 (16 parts)
❓ Frequently asked questions
Which FHF 745-4 spare parts also fit other movements?
For the FHF 745-4, 41 part numbers are listed as interchangeable. Together they fit 104 other calibers – the table below shows which part fits which movement.
Which movements share the most parts with the FHF 745-4?
The most shared parts: FHF 74-4 (56 parts), FHF 745-4N (53 parts), FHF 74-4N (51 parts).
Which mainspring fits the FHF 745-4?
According to the Générale Ressorts catalogue (height × diameter × thickness × length): 1.60 × 10.5 × 0.12 × 340 mm (GR 4538, hand-wound, normal end hook).
🛠️ For the workshop
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