Mainspring for Pierce 105
Height, diameter, thickness and length
📏 Mainspring dimensions
| GR no. | Height | Diameter | Thickness | Length | Type |
|---|---|---|---|---|---|
| 4112 | 1.50 mm | 8.5 mm | 0.095 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 159.
🛒 Matching mainspring in our shop
🔄 Alternative mainsprings
Mainspring 1,5x8,5x0,1x29011,90 € incl. VAT *View item
Mainspring 1,5x8,5x0,1x28011,90 € incl. VAT *View itemSame height, diameter equal or slightly smaller. Please check yourself before ordering.
🔗 According to the catalogue, the same mainspring (GR 4112) also fits
- Bifora 112
- Bifora SA 13
- Bifora SA 103
- Buren 10 /2-L.N
- Buren 5001
- Cortebert 10 1/2
- Cyma 031 - 5 1/4"
- Cyma 111
- Doxa 10 1/2 - 100
- Doxa 931 11 1/6"
- Dugena 557
- Dugena 1157
- Gruen 445 SS
- Gruen 827 SS
- Gruen 8277 SS
- Helbros 310
- Heuer 5400 10/2 DX R
- Marvin 771
- Osco 65 SC -
- Osco 65/66 SC
- Osco 66 SC
- Osco 66 SC/CLD - 10 1/2"
- Reconvilier 2320
- Reconvilier 2322
- Roamer 1105
- Rolex 10 1/2 nouveau cal. Hunter
- Rolex 51 Hunter
- Rolex 88
- Rolex 710 10/2"
- Rolex 760
- Rolex 8013 10 1/2"
❓ Frequently asked questions
Which mainspring fits the Pierce 105?
According to the Générale Ressorts catalogue (height × diameter × thickness × length): 1.50 × 8.5 × 0.095 × 300 mm (GR 4112, hand-wound, normal end hook).
Is this mainspring available in the shop?
An exact match is not in stock right now, but 2 similar mainsprings are possible alternatives.
Which other calibers use mainspring GR 4112?
According to the catalogue also in Bifora 112, Bifora SA 13, Bifora SA 103, Buren 10 /2-L.N, Buren 5001 and 26 other calibers.
🛠️ For the workshop
Clock Key 2-4-6-8-10, Star Key for Large Clocks and Wall Clocks, Brass – New8,49 € 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 ›
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 ›