FHF 77-21 – interchangeable spare parts

FHF 77-21 movement

Which spare parts fit the FHF 77-21 movement? For every part you can see which other calibers use the same part according to the original interchangeability list.

15Parts with interchange data

49Calibers 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

Part no.	Description	Also fits
240ISO 31.080	Cannon-pinion	FHF 60 FHF 60-21 FHF 60N FHF 692 Height 208 FHF 60 FHF 60-21 FHF 60N FHF 692 INT.S 69-21 Height 213according to original label FHF 60 FHF 60-21 FHF 60N FHF 692 Durowe 69-21INT.S 3.69INT.S 69-21 ST 69 ST 69-21 ST 69N Height 233 FHF 60 FHF 60-21 FHF 60N FHF 692 INT.S 69-21 Height 253 FHF 60 FHF 60-21 FHF 60N FHF 692 INT.S 69-21 Height 283 FHF 60 FHF 60-21 FHF 60N FHF 692 INT.S 69-21 Height 318 FHF 60 FHF 60-21 FHF 60N FHF 692 INT.S 69-21 Height 438 FHF 60 FHF 60-21 FHF 60N FHF 692 INT.S 69-21 Height 718 FHF 60 FHF 60-21 FHF 60N FHF 692 INT.S 69-21
250ISO 31.046	Hour wheel	FHF 60 FHF 60-21 FHF 60N FHF 692 Height 110 FHF 60 FHF 60-21 FHF 60N FHF 692 INT.S 69-21 Height 135 FHF 60 FHF 60-21 FHF 60N FHF 692 INT.S 69-21 Height 155 FHF 60 FHF 60-21 FHF 60N FHF 692 INT.S 69-21 Height 185 FHF 60 FHF 60-21 FHF 60N FHF 692 INT.S 69-21 Height 185according to original label FHF 60 FHF 60-21 FHF 61 FHF 692 Durowe 69-21INT.S 3.69INT.S 69-21 ST 69 ST 69-21 ST 69N Height 220 FHF 60 FHF 60-21 FHF 60N FHF 692 INT.S 69-21 Height 340 FHF 60 FHF 60-21 FHF 60N FHF 692 INT.S 69-21 Height 620 FHF 60 FHF 60-21 FHF 60N FHF 692 INT.S 69-21
250/255	Hour wheel	Height 110according to original label FHF 60 FHF 60-21 FHF 60N FHF 61 FHF 692 Durowe 69-21INT.S 3.69INT.S 3.691INT.S 69-21 INT.S 691 ST 69 ST 69-21 ST 69N ST 691 ST 691N Height 110according to original label FHF 60 FHF 60-21 FHF 60N FHF 61 Height 135according to original label FHF 60 FHF 60-21 FHF 61 FHF 692 Durowe 69-21INT.S 3.69INT.S 3.691INT.S 69-21 INT.S 691 ST 69 ST 69-21 ST 69N ST 691 ST 691N
260ISO 31.041	Minute wheel	FHF 60 FHF 60-1 FHF 60-2 FHF 60-2N FHF 60-21 FHF 601 FHF 692 according to original label FHF 60 FHF 60-1 FHF 60-2 FHF 60-2N FHF 60-21 FHF 601 ST 69 ST 69-21 Height 76 FHF 60 FHF 60-1 FHF 60-2 FHF 60-2N FHF 60-21 FHF 601 FHF 692 INT.S 69-21 Height 91 FHF 60 FHF 60-1 FHF 60-2 FHF 60-2N FHF 60-21 FHF 601 FHF 692 INT.S 69-21
311ISO 70.800	Upper cap jewel with end-piece	FHF 57 FHF 57-21 FHF 59-21
330ISO 70.801	Lower cap jewel with end-piece	FHF 55-4 FHF 60 FHF 60-1 FHF 60-2 FHF 60-2N FHF 60N FHF 62 FHF 62-2 FHF 62-2N FHF 67-4 FHF 75 FHF 601 FHF 675-4 FHF 676-4 ST 69
346ISO 70.807	Lower cap jewel with end-piece, f. esc. wheel	FHF 55-4 FHF 60 FHF 60-1 FHF 60-2 FHF 60-2N FHF 60-21 FHF 60N FHF 62 FHF 62-2 FHF 62-2N FHF 67-4 FHF 75 FHF 351 FHF 352 FHF 601 FHF 675-4 FHF 676-4 ST 69
401ISO 51.010	Winding stem	FHF 60 FHF 60-1 FHF 60-2 FHF 60-2N FHF 60-21 FHF 60N FHF 100.001 FHF 100.101 FHF 100.151 FHF 100.161 FHF 601 FHF 692 Durowe 69-21INT.S 3.69ST 69N
407ISO 31.121	Clutch wheel	FHF 60 FHF 60-1 FHF 60-2 FHF 60-2N FHF 60-21 FHF 60N FHF 601 FHF 692 Durowe 69-21 INT.S 69-21 ST 69
410ISO 31.120	Winding pinion	FHF 60 FHF 60-1 FHF 60-2 FHF 60-2N FHF 60-21 FHF 60N FHF 100.001 FHF 100.101 FHF 100.151 FHF 100.161 FHF 601 FHF 692 Durowe 69-21 INT.S 69-21 ST 69
425ISO 51.120	Click	FHF 32 FHF 34 FHF 34-21 FHF 35 FHF 60 FHF 60-1 FHF 60-2 FHF 60-2N FHF 60-21 FHF 60N FHF 62 FHF 62-2 FHF 62-2N FHF 63 FHF 63-2 FHF 75 FHF 351 FHF 352 FHF 601 Durowe 69-21 INT.S 69-21 ST 69 according to original label FHF 32 FHF 34 FHF 34-21 FHF 60 FHF 60-1 FHF 60-2 FHF 60-2N FHF 60N FHF 61 FHF 62 FHF 62-2 FHF 62-2N FHF 63 FHF 63-2 FHF 75 FHF 601 ST 69
430ISO 61.080	Click spring	FHF 32 FHF 60 FHF 60-1 FHF 60-2 FHF 60-2N FHF 60-21 FHF 60N FHF 62 FHF 62-2 FHF 62-2N FHF 63 FHF 63-2 FHF 64 FHF 64-2 FHF 64-2N FHF 75 FHF 601 FHF 641 FHF 641-2 FHF 641-2N FHF 642 Durowe 69-21 INT.S 69-21 ST 69 according to original label FHF 32 FHF 60 FHF 60-1 FHF 60-2 FHF 60-2N FHF 60-21 FHF 60N FHF 61 FHF 62 FHF 62-2 FHF 62-2N FHF 63 FHF 63-2 FHF 64 FHF 64-2 FHF 64-2N FHF 75 FHF 601 FHF 641 FHF 641-2 FHF 641-2N FHF 642 Durowe 69-21 INT.S 69-21 ST 69 ST 69-21 ST 691
435ISO 51.050	Yoke	FHF 60 2e FHF 60-1 FHF 60-2 FHF 60-2N FHF 60-21 FHF 60N FHF 601 FHF 692 Durowe 69-21 2e INT.S 69-21 ST 69
440ISO 61.100	Yoke spring	FHF 60 FHF 60-1 FHF 60-2 FHF 60-2N FHF 60-21 FHF 60N FHF 62 FHF 62-2 FHF 62-2N FHF 601 FHF 692 Durowe 69-21 INT.S 69-21 ST 69
450ISO 31.100	Setting wheel	FHF 60 FHF 60-1 FHF 60-2 FHF 60-2N FHF 60-21 FHF 60N FHF 601 FHF 692 Durowe 69-21 INT.S 69-21 ST 69

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 77-21 (height × diameter × thickness × length) and matching mainspring in our shop:

FHF 77-21: 1.60 × 6.0 × 0.07 × 200 mm (GR 4426)

🔗 Movements sharing the most parts

→ All calibers of FHF

❓ Frequently asked questions

Which FHF 77-21 spare parts also fit other movements?

For the FHF 77-21, 15 part numbers are listed as interchangeable. Together they fit 49 other calibers – the table below shows which part fits which movement.

Which movements share the most parts with the FHF 77-21?

The most shared parts: FHF 60 (37 parts), FHF 60-21 (35 parts), FHF 60N (31 parts).

Which mainspring fits the FHF 77-21?

According to the Générale Ressorts catalogue (height × diameter × thickness × length): 1.60 × 6.0 × 0.07 × 200 mm (GR 4426, hand-wound, normal end hook).