Unitas 234 – interchangeable spare parts

Unitas (UT) 234 movement

Which spare parts fit the Unitas 234 movement? For every part you can see which other calibers use the same part according to the original interchangeability list.

32Parts with interchange data

40Calibers 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.	Description	Also fits
182ISO 20.030	Barrel and cover	Unitas 233 Unitas 444
195ISO 20.060	Barrel arbor	Unitas 233 Unitas 444
201ISO 30.015	Center wheel	Unitas 233 Unitas 444
210ISO 30.025	Third wheel	2nd execution Unitas 444
224ISO 30.027.13	Fourth wheel	2nd execution Unitas 444
240ISO 31.080	Cannon-pinion	Unitas 233 Unitas 285 Unitas 286 Unitas 287 Unitas 444 Unitas 497 Unitas 498 Unitas 6498 Height 265 Unitas 233 Unitas 285 Unitas 286 Unitas 287 Unitas 444 Unitas 497 Unitas 498 Unitas 6497 Unitas 6498 Height 295 Unitas 233 Unitas 285 Unitas 286 Unitas 287 Unitas 444 Unitas 497 Unitas 498 Unitas 6497 Unitas 6498 Height 315 Unitas 233 Unitas 285 Unitas 286 Unitas 287 Unitas 444 Unitas 497 Unitas 498 Unitas 6497 Unitas 6498 Height 335 Unitas 233 Unitas 285 Unitas 286 Unitas 287 Unitas 444 Unitas 497 Unitas 498 Unitas 6497 Unitas 6498
250ISO 31.046	Hour wheel	Unitas 233 Unitas 285 Unitas 286 Unitas 287 Unitas 444 Unitas 497 Unitas 498 Unitas 6498 Height 165 Unitas 233 Unitas 285 Unitas 286 Unitas 287 Unitas 444 Unitas 497 Unitas 498 Unitas 6497 Unitas 6498 Height 200 Unitas 233 Unitas 285 Unitas 286 Unitas 287 Unitas 444 Unitas 497 Unitas 498 Unitas 6497 Unitas 6498 Height 215 Unitas 233 Unitas 285 Unitas 286 Unitas 287 Unitas 444 Unitas 497 Unitas 498 Unitas 6497 Unitas 6498 Height 230 Unitas 233 Unitas 285 Unitas 286 Unitas 287 Unitas 444 Unitas 497 Unitas 498 Unitas 6497 Unitas 6498 Height 235 Unitas 233 Unitas 285 Unitas 286 Unitas 287 Unitas 444 Unitas 497 Unitas 498 Unitas 6498
260ISO 31.041	Minute wheel	Unitas 233 Unitas 444
301ISO 40.301	Regulator for flat hairspring	Unitas 233 Unitas 444
311ISO 70.800	Upper cap jewel with end-piece	Unitas 231 Unitas 233 Unitas 429 Unitas 429N Unitas 431 2e Unitas 432 Unitas 444 Unitas 445 Unitas 446
330ISO 70.801	Lower cap jewel with end-piece	1st execution Unitas 233 2nd execution Unitas 231 2e Unitas 233 Unitas 285 Unitas 286 Unitas 343 Unitas 429 Unitas 429N Unitas 431 Unitas 432 Unitas 444 Unitas 445 Unitas 446 Unitas 497 Unitas 498 Unitas 6500
336ISO 70.806	Upper cap-jewel with end-piece, for escape wheel	Unitas 233 Unitas 429 Unitas 429N Unitas 431 Unitas 432 Unitas 444 Unitas 445 Unitas 446
346ISO 70.807	Lower cap jewel with end-piece, f. esc. wheel	1st execution Unitas 176 Unitas 190 Unitas 200 Unitas 200N Unitas 201 Unitas 201N Unitas 231 Unitas 233 Unitas 285 Unitas 286 Unitas 343 Unitas 429 Unitas 431 Unitas 432 Unitas 510 Unitas 520 Unitas 521 Unitas 630 2nd execution Unitas 176 Unitas 233 Unitas 285 Unitas 286 Unitas 343 Unitas 376 Unitas 444 Unitas 497 Unitas 498 Unitas 560 Unitas 570 Unitas 580 Unitas 600 Unitas 620 Unitas 640 Unitas 650 Unitas 6500
401ISO 51.010	Winding stem	Unitas 233 Unitas 285 Unitas 286 Unitas 444 Unitas 497 Unitas 498 Unitas 6497 Unitas 6500 Unitas 6503
407ISO 31.121	Clutch wheel	Unitas 233 Unitas 285 Unitas 286 Unitas 444 Unitas 497 Unitas 498 Unitas 6497 Unitas 6498 Unitas 6500 Unitas 6503
410ISO 31.120	Winding pinion	Unitas 233 Unitas 285 Unitas 286 Unitas 444 Unitas 497 Unitas 498 Unitas 6497 Unitas 6498 Unitas 6500 Unitas 6503
415ISO 31.020	Ratchet wheel	Unitas 233 Unitas 431 Unitas 432 Unitas 444 Unitas 445 Unitas 446 Unitas 6431 Unitas 6445 Unitas 6461
420ISO 31.023	Crown wheel	Unitas 233 Unitas 431 Unitas 432 Unitas 444 Unitas 445 Unitas 446 Unitas 6431 Unitas 6445
422ISO 81.067	Crown wheel ring	Unitas 231 Unitas 233 Unitas 285 Unitas 286 Unitas 343 Unitas 429 Unitas 431 Unitas 432 Unitas 444 Unitas 445 Unitas 446 Unitas 497 Unitas 498 Unitas 6431 Unitas 6445 Unitas 6497 Unitas 6498 Unitas 6500 Unitas 6503
425ISO 51.120	Click	Unitas 231 Unitas 233 Unitas 285 Unitas 286 Unitas 343 Unitas 429 Unitas 429N Unitas 431 Unitas 432 Unitas 444 Unitas 445 Unitas 446 Unitas 497 Unitas 498 Unitas 6431 Unitas 6445 Unitas 6497 Unitas 6498 Unitas 6500 Unitas 6503
430ISO 61.080	Click spring	Unitas 231 Unitas 233 Unitas 285 Unitas 286 Unitas 287 Unitas 343 Unitas 429 Unitas 429N Unitas 431 Unitas 432 Unitas 444 Unitas 445 Unitas 446 Unitas 497 Unitas 498 Unitas 6431 Unitas 6445 Unitas 6497 Unitas 6498 Unitas 6500 Unitas 6503
435ISO 51.050	Yoke	Unitas 231 Unitas 233 Unitas 285 Unitas 286 Unitas 343 Unitas 431 Unitas 432 Unitas 444 Unitas 445 Unitas 446 Unitas 497 Unitas 498 Unitas 6431 Unitas 6445 Unitas 6461 Unitas 6497 Unitas 6498 Unitas 6500 Unitas 6503
440ISO 61.100	Yoke spring	Unitas 231 Unitas 233 Unitas 285 Unitas 286 Unitas 343 Unitas 429 Unitas 429N Unitas 431 Unitas 432 Unitas 444 Unitas 445 Unitas 446 Unitas 497 Unitas 498 Unitas 6431 Unitas 6445 Unitas 6461 Unitas 6497 Unitas 6498 Unitas 6500 Unitas 6503
443ISO 51.080	Setting lever	Unitas 286 Unitas 444 Unitas 498
443/5443ISO 51.080.06/.01	Setting lever	Unitas 286 Unitas 444 Unitas 498
445ISO 51.090	Setting lever spring	Unitas 286 Unitas 432 Unitas 444 Unitas 446 Unitas 498
450ISO 31.100	Setting wheel	Unitas 233 Unitas 285 Unitas 286 Unitas 444 Unitas 497 Unitas 498 Unitas 6497 Unitas 6498 Unitas 6500 Unitas 6503
453ISO 31.101	Intermediate setting wheel	Unitas 233 Unitas 444
702ISO 30.040.12	Escape wheel and pinion, pivoted, for two end-pieces	Unitas 233
704ISO 30.040.10	Escape wheel and pinion, for upper end-piece	Unitas 233 Unitas 444
705ISO 30.040	Escape wheel and pinion	Unitas 233 Unitas 444
710ISO 40.010	Jewelled pallet fork and stat	Unitas 233 Unitas 444

Source: original interchangeability lists of Unitas (UT) (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 Unitas 234 (height × diameter × thickness × length) and matching mainspring in our shop:

Unitas 234: 1.50 × 15.5 × 0.21 × 480 mm (GR 4365)

🔗 Movements sharing the most parts

→ All calibers of Unitas (UT)

❓ Frequently asked questions

Which Unitas 234 spare parts also fit other movements?

For the Unitas 234, 32 part numbers are listed as interchangeable. Together they fit 40 other calibers – the table below shows which part fits which movement.

Which movements share the most parts with the Unitas 234?

The most shared parts: Unitas 444 (40 parts), Unitas 233 (38 parts), Unitas 286 (26 parts).

Which mainspring fits the Unitas 234?

According to the Générale Ressorts catalogue (height × diameter × thickness × length): 1.50 × 15.5 × 0.21 × 480 mm (GR 4365, hand-wound, normal end hook).