Mainspring for Recta F 3

Height, diameter, thickness and length

1.50 × 8.5 × 0.10 × 280 mmheight × diameter × thickness × length
Note: We have transcribed this information to the best of our knowledge from the Générale Ressorts mainspring catalogue (GR 2, 1974). All information has been carefully checked but is provided without guarantee. Please check yourself before fitting that the mainspring fits, in particular height, diameter, thickness and length.

📏 Mainspring dimensions

GR no.HeightDiameterThicknessLengthType
41211.50 mm8.5 mm0.10 mm280 mmHand-wound, normal end hook

All dimensions in millimetres. The height of a mainspring is often also called its “width”. Source: Générale Ressorts, mainspring catalogue GR 2 (March 1974), page 164.

🛒 Matching mainspring in our shop

Only mainsprings with exactly the same height, thickness and length are shown; the diameter is equal or up to 1 mm smaller – a smaller spring settles in the barrel.

🔄 Alternative mainsprings

Same height, diameter equal or slightly smaller. Please check yourself before ordering.

🔗 According to the catalogue, the same mainspring (GR 4121) also fits

❓ Frequently asked questions

Which mainspring fits the Recta F 3?

According to the Générale Ressorts catalogue (height × diameter × thickness × length): 1.50 × 8.5 × 0.10 × 280 mm (GR 4121, hand-wound, normal end hook).

Is this mainspring available in the shop?

Yes, Master Watch Parts currently has 1 matching mainsprings in stock.

Which other calibers use mainspring GR 4121?

According to the catalogue also in EHF 183, EHF 183-1, EHF 207, Election 62, Election 500 and 21 other calibers.

All Recta mainsprings · Mainsprings

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