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FEF 40B – interchangeable spare parts
FEF 40B movement
Which spare parts fit the FEF 40B movement? For every part you can see which other calibers use the same part according to the original interchangeability list.
1Parts with interchange data
2Calibers sharing parts
Note: We have compiled this overview to the best of our knowledge and belief, based on the original interchangeability lists of FEF 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.
🔧 Interchangeable parts
| Part no. | Description | Also fits |
|---|---|---|
| 445 | Setting lever spring | according to original label according to original label |
Source: original interchangeability lists of FEF (checked transcription) and checked original spare-part labels · as of 2026-10-17. Height / execution: the part fits only in this height or execution.