NUT - JAM (Yale YT220163690)

A damaged jam nut can compromise the security of a threaded assembly, leading to loosening under vibration. During inspection, a jam nut may show signs of wear or thread deformation that reduces its locking ability. This aftermarket replacement part cross-references Yale part number YT220163690. The jam nut functions as a thinner nut used to lock a standard nut in place by applying friction against the threads. A common failure consequence is that a loose jam nut allows the primary fastener to back out, causing mechanical play or separation. Keeping a jam nut in sound condition helps maintain consistent clamping force in bolted joints. Verify the serial number or application, then call (562) 693-7748.

Part number variants: YT220163690, yt220163690