Mainspring for ETA 2800

Height, diameter, thickness and length

1.25 × 12.0 × 0.10 × 520 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
3121	1.25 mm	12.0 mm	0.10 mm	520 mm	Hand-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 69.

🛒 Matching mainspring in our shop

We do not currently have a mainspring with exactly these dimensions in our shop. Feel free to write to us – we can often still find a suitable spring. Contact form · All mainsprings in our shop

🔧 Interchangeable spare parts

Which other spare parts of ETA 2800 fit other calibers:

Interchangeability ETA 2800

🔗 According to the catalogue, the same mainspring (GR 3121) also fits

❓ Frequently asked questions

Which mainspring fits the ETA 2800?

According to the Générale Ressorts catalogue (height × diameter × thickness × length): 1.25 × 12.0 × 0.10 × 520 mm (GR 3121, hand-wound, normal end hook).