ST 691N – interchangeable spare parts

ST 691N movement

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

37Parts with interchange data
23Calibers 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 691N in our shop

Cannon Pinion for ST 691, ST 691N, INT.S 691 – Part 245, H.203 – NOSCannon 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 220Fourth 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 – NOSCenter 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 692Date 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 – NOSComplete Balance ST 69-21 – Part 721 – for FHF 60-21, ST 69N, 691, 691N, FEF 6664 – NOS22,90 € – 27,90 € incl. VAT *View item ›Balance Complete Part 721 for ST 69-21, 69N, 691, 691N, FHF 60-21, FEF 6664, 6765 – NOSBalance Complete Part 721 for ST 69-21, 69N, 691, 691N, FHF 60-21, FEF 6664, 6765 – NOS24,90 € incl. VAT *View item ›

🔧 Interchangeable parts

Part no.DescriptionAlso fits
182ISO 20.030Barrel and cover
FHF 692INT.S 3.69ST 69N
according to original label
FHF 692INT.S 3.69INT.S 3.691ST 69N
195ISO 20.060Barrel arbor
FHF 692INT.S 3.69ST 69N
195/5415Barrel arbor
according to original label
FHF 692INT.S 3.69INT.S 3.691ST 69N
206ISO 30.015Center wheel
INT.S 691ST 691
according to original label
INT.S 3.691INT.S 691ST 691
210ISO 30.025Third wheel
FHF 60-21Durowe 69-21INT.S 69-21ST 69-21ST 69NST 691
220ISO 30.027Fourth wheel
INT.S 691ST 691
according to original label
INT.S 3.691INT.S 691ST 691
245ISO 31.080Cannon pinion with clam notch
ST 691
ST 691
Height 203
INT.S 691ST 691
Height 228
INT.S 691ST 691
Height 228according to original label
INT.S 3.691INT.S 691ST 691
Height 248
INT.S 691ST 691
Height 248according to original label
INT.S 3.691INT.S 691ST 691
Height 310
INT.S 691ST 691
Height 335
INT.S 691ST 691
255ISO 31.046Hour wheel
Height 110
ST 69ST 691
Height 135
ST 69ST 691
Height 155
ST 69ST 691
260ISO 31.041Minute wheel
FHF 60Durowe 69-21INT.S 69-21ST 69ST 69-21ST 69NST 691
274ISO 30.052
INT.S 691ST 691
275ISO 30.082Sweep second pinion
ST 691
ST 691
Height 560
INT.S 691ST 691
Height 585
INT.S 691ST 691
Height 605
INT.S 691ST 691
Height 668
INT.S 691ST 691
Height 693
INT.S 691ST 691
307ISO 40.301Regulator with adjustable stud holder, for flat hairspring
FHF 60-21Durowe 69-21INT.S 69-21ST 69-21ST 69NST 691
311ISO 70.800Upper cap jewel with end-piece
FHF 60-21Durowe 69-21INT.S 69-21ST 69-21ST 69NST 691
330ISO 70.801Lower cap jewel with end-piece
FHF 60-21Durowe 69-21INT.S 69-21ST 69-21ST 69NST 691
346ISO 70.807Lower cap jewel with end-piece, f. esc. wheel
FHF 60ST 69ST 69-21ST 69NST 691
401ISO 51.010Winding stem
FHF 692Durowe 69-21INT.S 3.69ST 69ST 69-21ST 69NST 691
according to original label
ETA 100.101 (quartz)FHF 60FHF 60-1FHF 60-2FHF 60-2NFHF 60-21FHF 60NFHF 77-21FHF 601FHF 692Durowe 69-21INT.S 3.69INT.S 3.691INT.S 69-21INT.S 691ST 69ST 69-21ST 69NST 691
Ø 90, LG 1700according to original label
Durowe 69-21INT.S 3.69INT.S 3.691INT.S 69-21INT.S 691ST 69ST 69-21ST 69NST 691
407ISO 31.121Clutch wheel
FHF 60Durowe 69-21INT.S 69-21ST 69ST 69-21ST 69NST 691
410ISO 31.120Winding pinion
FHF 60Durowe 69-21INT.S 69-21ST 69ST 69-21ST 69NST 691
415ISO 31.020Ratchet wheel
FHF 692INT.S 3.69ST 69N
420ISO 31.023Crown wheel
FHF 692INT.S 3.69ST 69N
434ISO 51.120Clicking spring
FHF 692INT.S 3.69ST 69N
435ISO 51.050Yoke
FHF 60 2eDurowe 69-21INT.S 69-21ST 69ST 69-21ST 69NST 691
440ISO 61.100Yoke spring
FHF 60Durowe 69-21INT.S 69-21ST 69ST 69-21ST 69NST 691
443/1ISO 51.080.06Setting lever, assembled
FHF 692INT.S 3.69ST 69-21ST 69NST 691
445ISO 51.090Setting lever spring
FHF 692INT.S 3.69ST 69N
2nd execution
FHF 692INT.S 3.69ST 69-21ST 69NST 691
450ISO 31.100Setting wheel
FHF 60Durowe 69-21INT.S 69-21ST 69ST 69-21ST 69NST 691
471ISO 60.131Friction spring for sweep second pinion
INT.S 691ST 691
according to original label
INT.S 3.691INT.S 691ST 691
703ISO 30.040.11Escape wheel and pinion, for lower end-piece
FHF 60-21Durowe 69-21INT.S 69-21ST 69-21ST 69NST 691
705ISO 30.040Escape wheel and pinion
FHF 60-21ST 69-21ST 69NST 691
710ISO 40.010Jewelled pallet fork and stat
FEF 6664FHF 692Durowe 69-21INT.S 69-21ST 69ST 69-21ST 69NST 691
according to original label
FEF 6664FEF 6665FEF 6764FEF 6765FHF 692Durowe 69-21INT.S 3.69INT.S 3.691ST 69ST 69-21ST 69NST 691
2535ISO 13.105 M6Date indicator guard
FEF 6664FHF 692INT.S 3.69ST 69-21ST 69NST 691
FEF 6664FHF 692INT.S 3.69ST 69-21ST 69NST 691
2556ISO 33.020 M6Date indicator driving wheel
FEF 6664FHF 692INT.S 3.69ST 69-21ST 69NST 691
FEF 6664FHF 692INT.S 3.69ST 69-21ST 69NST 691
2557/1ISO 91.440 M6Date indicator, transferred
FEF 6664FHF 692INT.S 3.69ST 69-21ST 69NST 691
FEF 6664FHF 692INT.S 3.69ST 69-21ST 69NST 691
2558ISO 33.010 M6Double-toothing hour wheel
ST 69-21ST 69NST 691
ST 69-21ST 69NST 691
Height 212
INT.S 3.69ST 69-21ST 69NST 691
Height 212
INT.S 3.69ST 69-21ST 69NST 691
Height 237
INT.S 3.69ST 69-21ST 69NST 691
Height 237
INT.S 3.69ST 69-21ST 69NST 691
2575ISO 63.030 M6Date jumper spring
FEF 6664FHF 692INT.S 3.69ST 69-21ST 69NST 691
FEF 6664FHF 692INT.S 3.69ST 69-21ST 69NST 691
2576ISO 53.080 M6Date jumper, mounted
FEF 6664FHF 692INT.S 3.69ST 69-21ST 69NST 691
FEF 6664FHF 692INT.S 3.69ST 69-21ST 69NST 691
according to original label
ETA 100.101 (quartz)FEF 6664FEF 6665FEF 6764FEF 6765FHF 692INT.S 3.69INT.S 3.691ST 69-21ST 69NST 691
2578Month jumper
according to original label
FEF 6664FEF 6665FEF 6764FEF 6765FHF 692INT.S 3.69INT.S 3.691ST 69-21ST 69NST 691

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.

🔗 Movements sharing the most parts

→ All calibers of ST

❓ Frequently asked questions

Which ST 691N spare parts also fit other movements?

For the ST 691N, 37 part numbers are listed as interchangeable. Together they fit 23 other calibers – the table below shows which part fits which movement.

Which movements share the most parts with the ST 691N?

The most shared parts: ST 691 (64 parts), ST 69N (46 parts), ST 69-21 (38 parts).

Can I buy spare parts for the ST 691N?

Yes, Master Watch Parts currently has 6 matching items in stock.

🛠️ For the workshop

Luminous Compound DIY Set for Watch Hands and Dials – Non-Radioactive – NewLuminous Compound DIY Set for Watch Hands and Dials – Non-Radioactive – New12,90 € – 29,90 € incl. VAT *View item ›Domed Sapphire Watch Crystal, 1.0 mm, Ø 16-40 mm – Replacement, NewDomed Sapphire Watch Crystal, 1.0 mm, Ø 16-40 mm – Replacement, New31,90 € – 44,90 € incl. VAT *View item ›High-Domed Watch Crystal Sternkreuz HW, Flume, for Wrist and Pocket Watches, 12-40 mmHigh-Domed Watch Crystal Sternkreuz HW, Flume, for Wrist and Pocket Watches, 12-40 mm5,95 € – 10,90 € incl. VAT *View item ›
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