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HomeGlossaryCastellated nut

Glossary · Mechanism

Castellated nut

A nut with slots for a locking pin.

Explanation

Used in heavy clockwork to ensure nuts do not vibrate loose.

Diagram

Schematic: plate and bridge layout. An outline schematic drawn to show the arrangement of the parts discussed here. It is not a dimensioned working drawing and does not depict a particular maker's calibre.

The Encyclopedia of Horology

A long-term reference archive for pocket watches, mechanical watches, clocks, movements and the history of mechanical timekeeping. Entries carry an editorial status and cited sources; unknown information is recorded as unknown rather than filled in.

Reference

Pocket Watches
Watches
Clocks
Movements
Database
Mechanisms
Escapements

Research

Components
Complications
Makers
Watchmakers
Regions
History
Identification
Collecting
Restoration
Glossary
Library
Museums
Articles

Educational resource. Nothing here is a valuation, an authentication or a guarantee of attribution. Consult a qualified watchmaker before servicing any antique movement.