FHF 34-21 – interchangeable spare parts

FHF 34-21 movement

Which spare parts fit the FHF 34-21 movement? For every part you can see which other calibers use the same part according to the original interchangeability list.

29Parts with interchange data

26Calibers 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.

🛒 Spare parts for FHF 34-21 in our shop

Jewelled Pallet Fork and Staff for AS 1138, Part 710, FHF 34, FHF 34-2119,90 € incl. VAT *View item ›

🔧 Interchangeable parts

Part no.	Description	Also fits
182ISO 20.030	Barrel and cover	FHF 34
195ISO 20.060	Barrel arbor	FHF 34
201ISO 30.015	Center wheel	FHF 34
240ISO 31.080	Cannon-pinion	FHF 34 Height 215 FHF 34 FHF 35 FHF 351 Height 245 FHF 34 FHF 35 FHF 351 Height 280 FHF 34 Height 340 FHF 34 Height 720 FHF 34
250ISO 31.046	Hour wheel	FHF 34 Height 105 FHF 34 Height 135 FHF 34 Height 170 FHF 34 Height 230 FHF 34 Height 610 FHF 34
260ISO 31.041	Minute wheel	FHF 34 FHF 35 FHF 351 FHF 352
307ISO 40.301	Regulator with adjustable stud holder, for flat hairspring	FHF 34
311ISO 70.800	Upper cap jewel with end-piece	FHF 32 FHF 34 FHF 60 FHF 60-1 FHF 60-2 FHF 60-2N FHF 60N FHF 62 FHF 62-2 FHF 62-2N FHF 601 ST 69
330ISO 70.801	Lower cap jewel with end-piece	FHF 32 FHF 34
336ISO 70.806	Upper cap-jewel with end-piece, for escape wheel	FHF 32 FHF 34 FHF 35
346ISO 70.807	Lower cap jewel with end-piece, f. esc. wheel	FHF 32 FHF 34 FHF 35
401ISO 51.010	Winding stem	FHF 34 FHF 35 FHF 351 FHF 352
407ISO 31.121	Clutch wheel	FHF 34 FHF 35 FHF 351 FHF 352
410ISO 31.120	Winding pinion	FHF 34 FHF 35 FHF 351 FHF 352
415ISO 31.020	Ratchet wheel	FHF 34
420ISO 31.023	Crown wheel	FHF 34
422ISO 81.067	Crown wheel ring	FHF 34 FHF 35 FHF 351 FHF 352
425ISO 51.120	Click	FHF 32 FHF 34 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 77-21 FHF 351 FHF 352 FHF 601 Durowe 69-21 INT.S 69-21 ST 69 according to original label FHF 32 FHF 34 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 77-21 FHF 601 ST 69
430ISO 61.080	Click spring	FHF 34 FHF 35 FHF 57 FHF 57-21 FHF 351 FHF 352
435ISO 51.050	Yoke	FHF 34 FHF 35 FHF 351 FHF 352
440ISO 61.100	Yoke spring	FHF 32 FHF 34 FHF 35 FHF 351 FHF 352
443ISO 51.080	Setting lever	FHF 34 FHF 35 FHF 351 FHF 352
443/5443ISO 51.080.06/01	Setting lever	FHF 34 FHF 35
445ISO 51.090	Setting lever spring	FHF 32 FHF 34 FHF 35 FHF 351 FHF 352
450ISO 31.100	Setting wheel	FHF 34 FHF 35 FHF 351 FHF 352
702ISO 30.040.12	Escape wheel and pinion, pivoted, for two end-pieces	FHF 34
703ISO 30.040.11	Escape wheel and pinion, for lower end-piece	FHF 34
705ISO 30.040	Escape wheel and pinion	FHF 34
710ISO 40.010	Jewelled pallet fork and stat	1st execution AS 1138 FHF 34

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 34-21 (height × diameter × thickness × length) and matching mainspring in our shop:

FHF 34-21: 1.30 × 6.5 × 0.085 × 220 mm (GR 3210-1)

📄 Technical document

View the original document for FHF 34-21 online:

FHF 34-21 – Ø 17.20 mm

🔗 Movements sharing the most parts

→ All calibers of FHF

❓ Frequently asked questions

Which FHF 34-21 spare parts also fit other movements?

For the FHF 34-21, 29 part numbers are listed as interchangeable. Together they fit 26 other calibers – the table below shows which part fits which movement.

Which movements share the most parts with the FHF 34-21?

The most shared parts: FHF 34 (40 parts), FHF 35 (17 parts), FHF 351 (14 parts).

Which mainspring fits the FHF 34-21?

According to the Générale Ressorts catalogue (height × diameter × thickness × length): 1.30 × 6.5 × 0.085 × 220 mm (GR 3210-1, hand-wound, special version (1)).