Unitas 540 – interchangeable spare parts

Unitas (UT) 540 movement

Which spare parts fit the Unitas 540 movement? For every part you can see which other calibers use the same part according to the original interchangeability list.

27Parts with interchange data
25Calibers 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.

🛒 Spare parts for Unitas 540 in our shop

Hollowed-Out Roller Part 730/1 for AS 969, FHF 59, UT 540, ETA 2510, AV 10, F 22Hollowed-Out Roller Part 730/1 for AS 969, FHF 59, UT 540, ETA 2510, AV 10, F 229,90 € incl. VAT *View item

🔧 Interchangeable parts

Part no.DescriptionAlso fits
182ISO 20.030Barrel and cover
Unitas 190Unitas 550
195ISO 20.060Barrel arbor
Unitas 550
206ISO 30.015Center wheel
Unitas 550
210ISO 30.025Third wheel
Unitas 550
260ISO 31.041Minute wheel
Unitas 550
301ISO 40.301Regulator for flat hairspring
Unitas 550
311ISO 70.800Upper cap jewel with end-piece
Unitas 190Unitas 200Unitas 200NUnitas 201Unitas 201NUnitas 550Unitas 580
330ISO 70.801Lower cap jewel with end-piece
Unitas 550
336ISO 70.806Upper cap-jewel with end-piece, for escape wheel
Unitas 550Unitas 580
346ISO 70.807Lower cap jewel with end-piece, f. esc. wheel
Unitas 550
401ISO 51.010Winding stem
Unitas 190Unitas 550
407ISO 31.121Clutch wheel
Unitas 550
410ISO 31.120Winding pinion
Unitas 190Unitas 550Unitas 580
415ISO 31.020Ratchet wheel
Unitas 550Unitas 580
420ISO 31.023Crown wheel
Unitas 550
422ISO 81.067Crown wheel ring
Unitas 190Unitas 510Unitas 520Unitas 521Unitas 550Unitas 580
425ISO 51.120Click
Unitas 550Unitas 580Unitas 630Unitas 6360Unitas 6365Unitas 6365NUnitas 6470Unitas 6475Unitas 6476Unitas 6480Unitas 6480NUnitas 6485Unitas 6485NUnitas 6486Unitas 6486NUnitas 6487Unitas 6488
430ISO 61.080Click spring
Unitas 550Unitas 580
435ISO 51.050Yoke
Unitas 550
440ISO 61.100Yoke spring
Unitas 550
443ISO 51.080Setting lever
Unitas 550
443/5443ISO 51.080.06/.01Setting lever
Unitas 550
445ISO 51.090Setting lever spring
Unitas 550
450ISO 31.100Setting wheel
Unitas 550
702ISO 30.040.12Escape wheel and pinion, pivoted, for two end-pieces
Unitas 550
705ISO 30.040Escape wheel and pinion
Unitas 550
710ISO 40.010Jewelled pallet fork and stat
Unitas 550

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.

🔗 Movements sharing the most parts

→ All calibers of Unitas (UT)

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