Mainspring for Lanco 1241

Height, diameter, thickness and length

1.40 × 9.0 × 0.115 × 260 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.HeightDiameterThicknessLengthType
37121.40 mm9.0 mm0.115 mm260 mmHand-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 118.

🛒 Matching mainspring in our shop

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

🔄 Alternative mainsprings

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

🔗 According to the catalogue, the same mainspring (GR 3712) also fits

❓ Frequently asked questions

Which mainspring fits the Lanco 1241?

According to the Générale Ressorts catalogue (height × diameter × thickness × length): 1.40 × 9.0 × 0.115 × 260 mm (GR 3712, hand-wound, normal end hook).

Is this mainspring available in the shop?

An exact match is not in stock right now, but 3 similar mainsprings are possible alternatives.

Which other calibers use mainspring GR 3712?

According to the catalogue also in Gruen 910 SS, Lanco 1056.

All Lanco mainsprings · Mainsprings

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