Otero 740 – interchangeable spare parts

Otero 740 movement

Which spare parts fit the Otero 740 movement? For every part you can see which other calibers use the same part according to the original Otero spare-part labels. We do not have an original interchangeability list from the manufacturer.

21Parts with interchange data

32Calibers sharing parts

Note: We have compiled this overview to the best of our knowledge and belief, based on the original Otero 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 Otero 740 in our shop

Crown Wheel Rings Part 422 for OTERO 44, 48, 64, 70, 162, 237, 334, 740, 14612,90 € incl. VAT *View item ›

Setting Lever and Screw Part 443 and 5443 for OTERO 70, 740, 742, 722, 71213,95 € incl. VAT *View item ›

Barrel Arbor Part 195 for OTERO 78, 162, 437, 740, 782, 796, 80010,95 € – 13,95 € incl. VAT *View item ›

Setting Lever Screws OTERO 62, Part 5443, for OTERO 70, 79, 840, 162, 77, 335, 74012,95 € incl. VAT *View item ›

Sweep Second Wheel and Pinion for OTERO 740, 840 – Part 227, Height 5.13 or 5.1512,90 € incl. VAT *View item ›

Third Wheel and Pinion Part 210 for OTERO 740, 744, 790, 840, 84412,90 € incl. VAT *View item ›

More items for Otero 740 in our shop →

🔧 Interchangeable parts

Part no.	Description	Also fits
180	barrel with arbor	Otero 744
195	barrel arbor	Otero 744
195/5415	Barrel arbor	Otero 744
227	Sweep second wheel	Height 5,13 Otero 840
260	Minute wheel	Otero 70 Otero 71 Otero 72 Otero 73 Otero 74 Otero 75 Otero 76 Otero 77 Otero 78 Otero 712 Otero 722 Otero 742 Otero 744 Otero 772 Otero 782
307/1	regulator	Otero 72 Otero 73 Otero 74 Otero 77 Otero 79 Otero 79K Otero 722 Otero 742 Otero 744 Otero 772 Otero 796 Otero 840 Otero 844 Otero 846
364	Stud holder	Otero 72 Otero 73 Otero 74 Otero 77 Otero 79 Otero 79K Otero 722 Otero 742 Otero 744 Otero 772 Otero 796 Otero 840 Otero 844 Otero 846
401	Winding stem	Otero 70 Otero 71 Otero 72 Otero 73 Otero 74 Otero 75 Otero 76 Otero 77 Otero 78 Otero 79 Otero 79K Otero 712 Otero 722 Otero 742 Otero 744 Otero 772 Otero 782 Otero 790 Otero 792 Otero 794 Otero 795 Otero 796 Otero 840 Otero 844 Otero 846 Otero 904
407	clutch wheel	Otero 70 Otero 71 Otero 72 Otero 73 Otero 74 Otero 75 Otero 76 Otero 77 Otero 78 Otero 79 Otero 79K Otero 712 Otero 722 Otero 742 Otero 744 Otero 772 Otero 782 Otero 790 Otero 792 Otero 794 Otero 795 Otero 796 Otero 840 Otero 844 Otero 846 Otero 904
410	Winding pinion	Otero 70 Otero 71 Otero 72 Otero 73 Otero 74 Otero 75 Otero 76 Otero 77 Otero 78 Otero 79 Otero 79K Otero 712 Otero 722 Otero 742 Otero 744 Otero 772 Otero 782 Otero 790 Otero 792 Otero 794 Otero 795 Otero 796 Otero 840 Otero 844 Otero 846 Otero 904
415	ratchet	Otero 70 Otero 71 Otero 72 Otero 73 Otero 74 Otero 712 Otero 722 Otero 742 Otero 744
420	crown wheel	Otero 70 Otero 71 Otero 72 Otero 73 Otero 74 Otero 78 Otero 712 Otero 722 Otero 742 Otero 744 Otero 782
422	Crown wheel ring	Otero 70 Otero 71 Otero 72 Otero 73 Otero 74 Otero 712 Otero 722 Otero 742 Otero 744
430	Click spring	Otero 40 Otero 41 Otero 45 Otero 64 Otero 70 Otero 71 Otero 72 Otero 73 Otero 74 Otero 712 Otero 722 Otero 742
443+5443	Setting lever with screw	Otero 70 Otero 71 Otero 72 Otero 73 Otero 74 Otero 78 Otero 712 Otero 722 Otero 742
445	Art.Nr. 445“	Otero 40 Otero 41 Otero 48 Otero 70 Otero 71 Otero 72 Otero 73 Otero 74 Otero 712 Otero 722 Otero 742 Otero 744 Otero 772 Otero 782 Otero 790 Otero 792 Otero 794 Otero 840 Otero 844 Otero 904
450	setting wheel	Otero 70 Otero 71 Otero 72 Otero 73 Otero 74 Otero 77 Otero 78 Otero 79 Otero 177 Otero 712 Otero 722 Otero 742 Otero 744 Otero 772
705	escape wheel	Otero 744 Otero 840 Otero 844 Otero 846 Otero 904
721/1	balance	Otero 744 Otero 790 Otero 794 Otero 796 Otero 840 Otero 844 Otero 846 Otero 904
5101	Case screw	Otero 72 Otero 73 Otero 74 Otero 79 Otero 722
5443	screw no (untere Zeilen teils verdeckt)	Otero 70 Otero 71 Otero 72 Otero 73 Otero 74 Otero 78 Otero 712 Otero 722 Otero 742

Source: checked original Otero spare-part labels · as of 2026-10-17. Height / execution: the part fits only in this height or execution.

🌀 Matching mainspring

Mainspring dimensions for Otero 740 (height × diameter × thickness × length) and matching mainspring in our shop:

Otero 740: 1.20 × 9.0 × 0.105 × 300 mm (GR 2935)

🔗 Movements sharing the most parts

→ All calibers of Otero

❓ Frequently asked questions

Which Otero 740 spare parts also fit other movements?

For the Otero 740, 21 part numbers are listed as interchangeable. Together they fit 32 other calibers – the table below shows which part fits which movement.

Which movements share the most parts with the Otero 740?

The most shared parts: Otero 744 (16 parts), Otero 72 (15 parts), Otero 73 (15 parts).

Which mainspring fits the Otero 740?

According to the Générale Ressorts catalogue (height × diameter × thickness × length): 1.20 × 9.0 × 0.105 × 300 mm (GR 2935, hand-wound, normal end hook).