Unitas 500 – interchangeable spare parts

Unitas (UT) 500 movement

Which spare parts fit the Unitas 500 movement? For every part you can see which other calibers use the same part according to the original interchangeability list.

9Parts with interchange data
50Calibers sharing parts
Note: We have compiled this overview to the best of our knowledge and belief, based on the original interchangeability lists of Unitas (UT) 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.DescriptionAlso fits
195Barrel arbor
240Cannon-pinion
250Hour wheel
260Minute wheel
401Winding stem
410Winding pinion
420Crown wheel
443/5443Setting lever
445Setting lever spring

Source: original interchangeability lists of Unitas (UT) (checked transcription) and checked original spare-part labels · as of 2026-10-17. Height / execution: the part fits only in this height or execution.

🌀 Matching mainspring

Mainspring dimensions for Unitas 500 (height × diameter × thickness × length) and matching mainspring in our shop:

🔗 Movements sharing the most parts

→ All calibers of Unitas (UT)

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