AS 1237 – interchangeable spare parts

A. Schild (AS) 1237 movement

Which spare parts fit the AS 1237 movement? For every part you can see which other calibers use the same part according to the original interchangeability list.

1Parts with interchange data

3Calibers sharing parts

Note: We have compiled this overview to the best of our knowledge and belief, based on the original interchangeability lists of A. Schild (AS) and the original spare-part labels. All information has been carefully checked but is provided without guarantee. Please verify the interchangeability yourself before fitting, especially the height, diameter and execution of the part.

🛒 Spare parts for AS 1237 in our shop

Complete Balance Wheel AS 1237 – Part 721 – Shock-Resistant – NOS25,90 € incl. VAT *View item ›

🔧 Interchangeable parts

Part no.	Description	Also fits
401	Winding stem	according to original label AS 1238 AS 1245 EB 1197 Ø 90according to original label AS 1238 AS 1245 EB 1197

Source: original interchangeability lists of A. Schild (AS) (checked transcription) and checked original spare-part labels · as of 2026-10-28. Height / execution: the part fits only in this height or execution.

🌀 Matching mainspring

Mainspring dimensions for AS 1237 (height × diameter × thickness × length) and matching mainspring in our shop:

AS 1237: 1.60 × 8.5 × 0.105 × 280 mm (GR 4502)

🔗 Movements sharing the most parts

→ All calibers of A. Schild (AS)

❓ Frequently asked questions

Which AS 1237 spare parts also fit other movements?

For the AS 1237, 1 part numbers are listed as interchangeable. Together they fit 3 other calibers – the table below shows which part fits which movement.

Which movements share the most parts with the AS 1237?

The most shared parts: AS 1238 (2 parts), AS 1245 (2 parts).

Which mainspring fits the AS 1237?

According to the Générale Ressorts catalogue (height × diameter × thickness × length): 1.60 × 8.5 × 0.105 × 280 mm (GR 4502, hand-wound, normal end hook).