Mainspring for FHF 66-4

Height, diameter, thickness and length

1.0 × 10.0 × 0.125 × 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
2473	1.0 mm	10.0 mm	0.125 mm	320 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 82.

🛒 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 FHF 66-4 fit other calibers:

Interchangeability FHF 66-4

🔗 According to the catalogue, the same mainspring (GR 2473) also fits

📄 Technical document

View the original document for FHF 66-4 online:

FHF 66-4 – Ø 25.60 mm

❓ Frequently asked questions

Which mainspring fits the FHF 66-4?

According to the Générale Ressorts catalogue (height × diameter × thickness × length): 1.0 × 10.0 × 0.125 × 320 mm (GR 2473, hand-wound, normal end hook).