Mainspring for INT.S 378
Height, diameter, thickness and length
📏 Mainspring dimensions
| GR no. | Height | Diameter | Thickness | Length | Type |
|---|---|---|---|---|---|
| 3617 | 1.40 mm | 8.0 mm | 0.085 mm | 300 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 171.
🛒 Matching mainspring in our shop
🔄 Alternative mainsprings
Same height, diameter equal or slightly smaller. Please check yourself before ordering.
🔧 Interchangeable spare parts
Which other spare parts of INT.S 378 fit other calibers:
🔗 According to the catalogue, the same mainspring (GR 3617) also fits
❓ Frequently asked questions
Which mainspring fits the INT.S 378?
According to the Générale Ressorts catalogue (height × diameter × thickness × length): 1.40 × 8.0 × 0.085 × 300 mm (GR 3617, 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 3617?
According to the catalogue also in FHF 37, INT.S 37, INT.S 374, Rolex 8 3/s"" SAV, Rolex 9 3/."" Hunter and 3 other calibers.
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