Mainspring for Urofa 581

Height, diameter, thickness and length

1.20 × 12.0 × 0.13 × 380 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
29921.20 mm12.0 mm0.13 mm380 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 189.

🛒 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 2992) also fits

❓ Frequently asked questions

Which mainspring fits the Urofa 581?

According to the Générale Ressorts catalogue (height × diameter × thickness × length): 1.20 × 12.0 × 0.13 × 380 mm (GR 2992, hand-wound, normal end hook).

Is this mainspring available in the shop?

Yes, Master Watch Parts currently has 2 matching mainsprings in stock.

Which other calibers use mainspring GR 2992?

According to the catalogue also in Urofa 58.

All Urofa mainsprings · Mainsprings

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