NUT - LOCK HEX JAM (Yale YT15010500)

A damaged lock nut can allow threaded fasteners to loosen under vibration, leading to mechanical misalignment or component separation. The Yale catalog reference YT15010500 identifies this aftermarket replacement part as a hex jam nut. Its primary function is to secure another nut or bolt by providing a locking action through its reduced height and tight thread fit. A common failure consequence is that a worn or stripped jam nut fails to maintain clamping force, resulting in loosening of the assembly over time. During routine service, a hex jam nut is often used in pairs to prevent rotation on a threaded shaft. Verify the serial number or application, then call (562) 693-7748. This part is a hardware nut, specifically a lock hex jam type, and is listed under the Yale parts catalog.

Part number variants: YT15010500, yt15010500