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The Encyclopedia of Horology

Glossary · Mechanism

Winding stem

The shaft connecting the crown to the keyless works, transmitting winding and hand-setting motion into the movement.

Explanation

The winding stem is the shaft connecting the crown to the keyless work. Turning it winds the mainspring; pulling it out moves it to the hand-setting position. Stems are specific to a calibre and case, and replacement stems must be the correct pattern and cut to the correct length so the crown seats properly.

In the object catalogue

Catalogued objects whose own source record mentions “Winding stem”. The quoted line shows where; it is the seller’s or museum’s wording, not independent verification.