ST 691 – interchangeable spare parts

ST 691 movement

Which spare parts fit the ST 691 movement? For every part you can see which other calibers use the same part according to the original interchangeability list.

40Parts with interchange data

28Calibers sharing parts

Note: We have compiled this overview to the best of our knowledge and belief, based on the original interchangeability lists of ST 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 ST 691 in our shop

Standard Watch Parts for ST 69, ST 69-21, ST 69N, ST 691, ST 974, ST 1800, ST 97 – NOS10,95 € – 24,95 € incl. VAT *View item ›

Cannon Pinion for ST 691, ST 691N, INT.S 691 – Part 245, H.203 – NOS11,90 € incl. VAT *View item ›

Fourth Wheel and Pinion for ST 691, ST 691N, INT.S 3.691, INT.S 691 – Part 22013,90 € incl. VAT *View item ›

Center Wheel, Drilled, without Cannon Pinion, ST 691, 691N, INT.S 691 – Part 206 – NOS13,90 € incl. VAT *View item ›

Date Jumper for ST 69-21, Part 2576 – Fits ST 69N, 691, 691N, 100.101, FHF 69211,95 € incl. VAT *View item ›

Complete Balance ST 69-21 – Part 721 – for FHF 60-21, ST 69N, 691, 691N, FEF 6664 – NOS22,90 € – 27,90 € incl. VAT *View item ›

More items for ST 691 in our shop →

🔧 Interchangeable parts

Part no.	Description	Also fits
182ISO 20.030	Barrel and cover	FHF 60 Durowe 69-21 INT.S 69-21 ST 69 ST 69-21
195ISO 20.060	Barrel arbor	FHF 60-21 Durowe 69-21 INT.S 69-21 ST 69-21
206ISO 30.015	Center wheel	INT.S 3.691INT.S 691 INT.S 691 ST 691N according to original label INT.S 3.691INT.S 691 ST 691N
210ISO 30.025	Third wheel	FHF 60-21 Durowe 69-21 INT.S 69-21 ST 69-21 ST 69N ST 691N
220ISO 30.027	Fourth wheel	INT.S 3.691INT.S 691 INT.S 691 ST 691N according to original label INT.S 3.691INT.S 691 ST 691N
245ISO 31.080	Cannon pinion with clam notch	ST 691N ST 691N Height 203 INT.S 3.691INT.S 691 Height 203 INT.S 691 ST 691N Height 228 INT.S 3.691INT.S 691 Height 228 INT.S 691 ST 691N Height 228according to original label INT.S 3.691INT.S 691 ST 691N Height 248 INT.S 3.691INT.S 691 Height 248 INT.S 691 ST 691N Height 248according to original label INT.S 3.691INT.S 691 ST 691N Height 310 INT.S 691 ST 691N Height 335 INT.S 691 ST 691N
255ISO 31.046	Hour wheel	Height 110 ST 69 ST 691N Height 135 ST 69 ST 691N Height 155 ST 69 ST 691N
260ISO 31.041	Minute wheel	FHF 60 Durowe 69-21 INT.S 69-21 ST 69 ST 69-21 ST 69N ST 691N
274ISO 30.052		INT.S 3.691INT.S 691 INT.S 691 ST 691N
275ISO 30.082	Sweep second pinion	ST 691N ST 691N Height 560 INT.S 3.691INT.S 691 Height 560 INT.S 691 ST 691N Height 585 INT.S 3.691INT.S 691 Height 585 INT.S 691 ST 691N Height 605 INT.S 3.691INT.S 691 Height 605 INT.S 691 ST 691N Height 668 INT.S 3.691INT.S 691 Height 668 INT.S 691 ST 691N Height 693 INT.S 3.691INT.S 691 Height 693 INT.S 691 ST 691N
307ISO 40.301	Regulator with adjustable stud holder, for flat hairspring	FHF 60-21 Durowe 69-21 INT.S 69-21 ST 69-21 ST 69N ST 691N
311ISO 70.800	Upper cap jewel with end-piece	FHF 60-21 Durowe 69-21 INT.S 69-21 ST 69-21 ST 69N ST 691N
330ISO 70.801	Lower cap jewel with end-piece	FHF 60-21 Durowe 69-21 INT.S 69-21 ST 69-21 ST 69N ST 691N
346ISO 70.807	Lower cap jewel with end-piece, f. esc. wheel	FHF 60 ST 69 ST 69-21 ST 69N ST 691N
401ISO 51.010	Winding stem	FHF 692 Durowe 69-21INT.S 3.69ST 69 ST 69-21 ST 69N ST 691N according to original label ETA 100.101 (quartz)FHF 60 FHF 60-1 FHF 60-2 FHF 60-2N FHF 60-21 FHF 60N FHF 77-21 FHF 601 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 691N Ø 90, LG 1700according to original label Durowe 69-21INT.S 3.69INT.S 3.691INT.S 69-21 INT.S 691 ST 69 ST 69-21 ST 69N ST 691N
407ISO 31.121	Clutch wheel	FHF 60 Durowe 69-21 INT.S 69-21 ST 69 ST 69-21 ST 69N ST 691N
410ISO 31.120	Winding pinion	FHF 60 Durowe 69-21 INT.S 69-21 ST 69 ST 69-21 ST 69N ST 691N
415ISO 31.020	Ratchet wheel	FHF 60 1e Durowe 69-21 2e INT.S 69-21 ST 69 2e ST 69-21
420ISO 31.023	Crown wheel	FHF 60 Durowe 69-21 INT.S 69-21 ST 69 ST 69-21
422ISO 81.067	Crown wheel ring	FHF 32 Durowe 69-21 INT.S 69-21 ST 69 ST 69-21
425ISO 51.120	Click	FHF 32 Durowe 69-21 INT.S 69-21 ST 69 ST 69-21
430ISO 61.080	Click spring	FHF 32 Durowe 69-21 INT.S 69-21 ST 69 ST 69-21
435ISO 51.050	Yoke	FHF 60 2e Durowe 69-21 INT.S 69-21 ST 69 ST 69-21 ST 69N ST 691N
440ISO 61.100	Yoke spring	FHF 60 Durowe 69-21 INT.S 69-21 ST 69 ST 69-21 ST 69N ST 691N
443ISO 51.080	Setting lever	FHF 60 2e Durowe 69-21 INT.S 69-21 ST 69 ST 69-21
443/1ISO 51.080.06	Setting lever, assembled	FHF 692INT.S 3.69ST 69-21 ST 69N ST 691N
443/5443ISO 51.080.06/.01	Setting lever	FHF 60 2e Durowe 69-21 INT.S 69-21 ST 69 ST 69-21
445ISO 51.090	Setting lever spring	according to original label 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 601 Durowe 69-21 INT.S 69-21 INT.S 691 ST 69 ST 69-21 1st execution FHF 60 Durowe 69-21 INT.S 69-21 ST 69 ST 69-21 2nd execution FHF 692INT.S 3.69ST 69-21 ST 69N ST 691N
450ISO 31.100	Setting wheel	FHF 60 Durowe 69-21 INT.S 69-21 ST 69 ST 69-21 ST 69N ST 691N
471ISO 60.131	Friction spring for sweep second pinion	INT.S 3.691INT.S 691 INT.S 691 ST 691N according to original label INT.S 3.691INT.S 691 ST 691N
703ISO 30.040.11	Escape wheel and pinion, for lower end-piece	FHF 60-21 Durowe 69-21 INT.S 69-21 ST 69-21 ST 69N ST 691N
705ISO 30.040	Escape wheel and pinion	FHF 60-21 ST 69-21 ST 69N ST 691N
710ISO 40.010	Jewelled pallet fork and stat	FEF 6664 FHF 692 Durowe 69-21 INT.S 69-21 ST 69 ST 69-21 ST 69N ST 691N according to original label FEF 6664 FEF 6665 FEF 6764 FEF 6765 FHF 692 Durowe 69-21INT.S 3.69INT.S 3.691ST 69 ST 69-21 ST 69N ST 691N
2535ISO 13.105 M6	Date indicator guard	FEF 6664 FHF 692INT.S 3.69ST 69-21 ST 69N ST 691N FEF 6664 FHF 692INT.S 3.69ST 69-21 ST 69N ST 691N
2556ISO 33.020 M6	Date indicator driving wheel	FEF 6664 FHF 692INT.S 3.69ST 69-21 ST 69N ST 691N FEF 6664 FHF 692INT.S 3.69ST 69-21 ST 69N ST 691N
2557/1ISO 91.440 M6	Date indicator, transferred	FEF 6664 FHF 692INT.S 3.69ST 69-21 ST 69N ST 691N FEF 6664 FHF 692INT.S 3.69ST 69-21 ST 69N ST 691N
2558ISO 33.010 M6	Double-toothing hour wheel	ST 69-21 ST 69N ST 691N ST 69-21 ST 69N ST 691N Height 212 INT.S 3.69ST 69-21 ST 69N ST 691N Height 212 INT.S 3.69ST 69-21 ST 69N ST 691N Height 237 INT.S 3.69ST 69-21 ST 69N ST 691N Height 237 INT.S 3.69ST 69-21 ST 69N ST 691N
2575ISO 63.030 M6	Date jumper spring	FEF 6664 FHF 692INT.S 3.69ST 69-21 ST 69N ST 691N FEF 6664 FHF 692INT.S 3.69ST 69-21 ST 69N ST 691N
2576ISO 53.080 M6	Date jumper, mounted	FEF 6664 FHF 692INT.S 3.69ST 69-21 ST 69N ST 691N FEF 6664 FHF 692INT.S 3.69ST 69-21 ST 69N ST 691N according to original label ETA 100.101 (quartz)FEF 6664 FEF 6665 FEF 6764 FEF 6765 FHF 692INT.S 3.69INT.S 3.691ST 69-21 ST 69N ST 691N
2578	Month jumper	according to original label FEF 6664 FEF 6665 FEF 6764 FEF 6765 FHF 692INT.S 3.69INT.S 3.691ST 69-21 ST 69N ST 691N

Source: original interchangeability lists of ST (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 ST 691 (height × diameter × thickness × length) and matching mainspring in our shop:

ST 691: 1.60 × 7.5 × 0.085 × 280 mm (GR 4456-1)

📄 Technical document

View the original document for FHF 691 online:

FHF ST 691 – 15.30 x 17.80 mm

🔗 Movements sharing the most parts

→ All calibers of ST

❓ Frequently asked questions

Which ST 691 spare parts also fit other movements?

For the ST 691, 40 part numbers are listed as interchangeable. Together they fit 28 other calibers – the table below shows which part fits which movement.

Which movements share the most parts with the ST 691?

The most shared parts: ST 691N (64 parts), ST 69-21 (49 parts), ST 69N (38 parts).

Which mainspring fits the ST 691?

According to the Générale Ressorts catalogue (height × diameter × thickness × length): 1.60 × 7.5 × 0.085 × 280 mm (GR 4456-1, hand-wound, special version (1)).