FHF 665-4 – interchangeable spare parts
FHF 665-4 movement
Which spare parts fit the FHF 665-4 movement? For every part you can see which other calibers use the same part according to the original interchangeability list.
40Parts with interchange data
100Calibers sharing parts
Note: We have compiled this overview to the best of our knowledge and belief, based on the original interchangeability lists of FHF 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
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.
🔗 Movements sharing the most parts
- FHF 66-4 (45 parts)
- FHF 665-4N (44 parts)
- FHF 66-4N (41 parts)
- FHF 665 (40 parts)
- FHF 66 (39 parts)
- FHF 665-9 (38 parts)
- FHF 66-9 (36 parts)
- FHF 72-4 (13 parts)
- FHF 725-4 (13 parts)
- FHF 65 (13 parts)
- FHF 65-4 (13 parts)
- FHF 73-4 (11 parts)
- FHF 729-4N (11 parts)
- FHF 735-4 (11 parts)
- FHF 72-4N (10 parts)
- FHF 74-4 (10 parts)
❓ Frequently asked questions
Which FHF 665-4 spare parts also fit other movements?
For the FHF 665-4, 40 part numbers are listed as interchangeable. Together they fit 100 other calibers – the table below shows which part fits which movement.
Which movements share the most parts with the FHF 665-4?
The most shared parts: FHF 66-4 (45 parts), FHF 665-4N (44 parts), FHF 66-4N (41 parts).
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