FHF 551 – interchangeable spare parts
FHF 551 movement
Which spare parts fit the FHF 551 movement? For every part you can see which other calibers use the same part according to the original interchangeability list.
đź”§ 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 551 (height Ă— diameter Ă— thickness Ă— length) and matching mainspring in our shop:
đź”— Movements sharing the most parts
- FHF 55 (54 parts)
- FHF 725 (39 parts)
- FHF 729 (39 parts)
- FHF 72 (38 parts)
- FHF 725-7 (38 parts)
- FHF 729-7 (38 parts)
- FHF 72-6 (37 parts)
- FHF 72-7 (37 parts)
- FHF 725-4 (37 parts)
- FHF 725-4N (37 parts)
- FHF 729-4N (37 parts)
- FHF 72-4N (36 parts)
- FHF 72-9 (34 parts)
- FHF 55-2 (32 parts)
- FHF 72-4 (32 parts)
- FHF 725-9 (31 parts)
âť“ Frequently asked questions
Which FHF 551 spare parts also fit other movements?
For the FHF 551, 36 part numbers are listed as interchangeable. Together they fit 96 other calibers – the table below shows which part fits which movement.
Which movements share the most parts with the FHF 551?
The most shared parts: FHF 55 (54 parts), FHF 725 (39 parts), FHF 729 (39 parts).
Which mainspring fits the FHF 551?
According to the Générale Ressorts catalogue (height × diameter × thickness × length): 1.20 × 9.0 × 0.11 × 300 mm (GR 2949, hand-wound, normal end hook).
🛠️ For the workshop
Watch Crystal Sternkreuz ATCH, High Domed, Reinforced with Chrome-Plated Ring – NOS11,95 € incl. VAT *View item ›
Pocket Watch Key Set, 14 Pieces, Brass, with Key Chain12,90 € incl. VAT *View item ›
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 ›