Junghans 623.20 – interchangeable spare parts

Junghans 623.20 movement

Which spare parts fit the Junghans 623.20 movement? For every part you can see which other calibers use the same part according to the original Junghans spare-part labels. We do not have an original interchangeability list from the manufacturer.

17Parts with interchange data
9Calibers sharing parts
Note: We have compiled this overview to the best of our knowledge and belief, based on the original Junghans spare-part labels; we do not have an original interchangeability list from the manufacturer. 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 Junghans 623.20 in our shop

🔧 Interchangeable parts

Part no.DescriptionAlso fits
126Center wheel cock
197Core and ratchet wheel, riveted
198Screw-axle for barrel
227Sweep second wheel and pinion
245Cannon pinion with clam notch, for sweep second
255Hour wheel for sweep second
260Minute wheel
307/1Regulator for adjustable stud holder, for flat hairspring
401Winding stem
407Clutch wheel
410Winding pinion
421Lower crown wheel
434Clicking spring (locking spring)
435Yoke (clutch lever)
450Setting wheel
705Escape wheel and pinion with straight pivots
770Mainspring

Source: checked original Junghans spare-part labels · as of 2026-10-18. Height / execution: the part fits only in this height or execution.

🔗 Movements sharing the most parts

→ All calibers of Junghans

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