Mainspring for BFG 620
Height, diameter, thickness and length
2.50 × 22.0 × 0.225 × 800 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 |
|---|---|---|---|---|---|
| 6728 | 2.50 mm | 22.0 mm | 0.225 mm | 800 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 27.
🛒 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 6728) also fits
❓ Frequently asked questions
Which mainspring fits the BFG 620?
According to the Générale Ressorts catalogue (height × diameter × thickness × length): 2.50 × 22.0 × 0.225 × 800 mm (GR 6728, hand-wound, normal end hook).
Which other calibers use mainspring GR 6728?
According to the catalogue also in BFG 109, BFG 140, BFG 180, BFG 555.
🛠️ For the workshop
Red Teflon Hard Gasket For Watch Caseback Multi Size Listing Ø 16-42. Suitable for many brand watches such as Omega, Tissot, Junghans5,95 € – 7,95 € incl. VAT *View item ›
Swiss Super-LumiNova BGW9 Grade A Luminous Pigment with Clear Lacquer and Thinner99,90 € – 134,90 € incl. VAT *View item ›
SAPPHIRE CRYSTAL WATCH GLASS REPLACEMENT ROUND 2.0 MM THICK FLAT SIZE 20MM-42.5MM27,90 € – 39,90 € incl. VAT *View item ›