Mainspring for AS 964
Height, diameter, thickness and length
📏 Mainspring dimensions
| GR no. | Height | Diameter | Thickness | Length | Type |
|---|---|---|---|---|---|
| 4428 | 1.60 mm | 6.5 mm | 0.07 mm | 240 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 10.
đź›’ Matching mainspring in our shop
🔄 Alternative mainsprings
Same height, diameter equal or slightly smaller. Please check yourself before ordering.
đź”§ Interchangeable spare parts
Which other spare parts of AS 964 fit other calibers:
đź”— According to the catalogue, the same mainspring (GR 4428) also fits
âť“ Frequently asked questions
Which mainspring fits the AS 964?
According to the Générale Ressorts catalogue (height × diameter × thickness × length): 1.60 × 6.5 × 0.07 × 240 mm (GR 4428, hand-wound, normal end hook).
Is this mainspring available in the shop?
An exact match is not in stock right now, but 1 similar mainsprings are possible alternatives.
Which other calibers use mainspring GR 4428?
According to the catalogue also in Benrus AF 6/7", Bulova 7 BU, Bulova 7 WF, Cortebert 425 II, Rolex 1061 and 2 other calibers.
🛠️ For the workshop
Watch Crystal Sternkreuz ATCR, Domed, Reinforced with Chrome Ring – NOS10,90 € incl. VAT *View item ›
Watch Key Clock Winding Key – Size 0 2.25mm5,99 € – 7,95 € incl. VAT *View item ›
Watch Gasket Hytrel I-Ring Seal for Flat Round Mineral Crystals 16-40 mm, H: 0.6, 0.8, 0.85, 1.25, 1.7 mm5,95 € – 9,95 € incl. VAT *View item ›