Mainspring for Kaiser 20 Aut

Height, diameter, thickness and length

1.40 × 9.5 × 0.10 × 300 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
3664-X	1.40 mm	9.5 mm	0.10 mm	300 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 111.

🛒 Matching mainspring in our shop

Mainspring 1,40-9,0-0,10-300 FÖ 80/8114,90 € incl. VAT *View item

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

Mainspring 1,40-9,0-0,11-270 HOHL 69/112314,90 € incl. VAT *View item

Mainspring 1,40-9,45-0,0925-315 DUR 1162/127814,90 € incl. VAT *View item

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

🔗 According to the catalogue, the same mainspring (GR 3664-X) also fits

❓ Frequently asked questions

Which mainspring fits the Kaiser 20 Aut?

According to the Générale Ressorts catalogue (height × diameter × thickness × length): 1.40 × 9.5 × 0.10 × 300 mm (GR 3664-X, automatic, with welded slipping bridle).