Mainspring for Unitas 387 à 390

Height, diameter, thickness and length

2.10 × 16.0 × 0.195 × 500 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
6087	2.10 mm	16.0 mm	0.195 mm	500 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 185.

🛒 Matching mainspring in our shop

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

🔄 Alternative mainsprings

Mainspring 2,1x16x0,21x45013,90 € incl. VAT *View item

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

❓ Frequently asked questions

Which mainspring fits the Unitas 387 à 390?

According to the Générale Ressorts catalogue (height × diameter × thickness × length): 2.10 × 16.0 × 0.195 × 500 mm (GR 6087, hand-wound, normal end hook).