Mainspring for Certina 25-45

Height, diameter, thickness and length

1.30 × 9.5 × 0.095 × 360 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
3239-X	1.30 mm	9.5 mm	0.095 mm	360 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 112.

🛒 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

🔗 According to the catalogue, the same mainspring (GR 3239-X) also fits

📄 Technical document

View the original document for Certina 25-45 online:

Certina 25-45-25-451-28-45-28-451

❓ Frequently asked questions

Which mainspring fits the Certina 25-45?

According to the Générale Ressorts catalogue (height × diameter × thickness × length): 1.30 × 9.5 × 0.095 × 360 mm (GR 3239-X, automatic, with welded slipping bridle).