Mainspring for Otero 78 Aut

Height, diameter, thickness and length

1.20 × 9.5 × 0.095 × 320 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.	Height	Diameter	Thickness	Length	Type
2904-X	1.20 mm	9.5 mm	0.095 mm	320 mm	Automatic, with welded slipping bridle

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 154.

🛒 Matching mainspring in our shop

No mainspring with exactly these dimensions in our shop at the moment.

🔄 Alternative mainsprings

Mainspring 1,20-9,45-0,10-310 DUR 51014,90 € incl. VAT *View item

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

🔧 Interchangeable spare parts

Which other spare parts of Otero 78 fit other calibers:

Interchangeability Otero 78

🔗 According to the catalogue, the same mainspring (GR 2904-X) also fits

❓ Frequently asked questions

Which mainspring fits the Otero 78 Aut?

According to the Générale Ressorts catalogue (height × diameter × thickness × length): 1.20 × 9.5 × 0.095 × 320 mm (GR 2904-X, automatic, with welded slipping bridle).