NUT - JAM (CAT CT20210000)

A damaged jam nut can allow threaded fasteners to loosen under vibration, leading to mechanical misalignment or component separation. During inspection, a jam nut's condition affects the clamping force on a joint, which is critical for maintaining assembly integrity. This aftermarket replacement part is cataloged under CAT reference CT20210000. The part type is a thin nut used to lock another nut in place by applying friction against the threads. A common failure consequence is that a stripped or corroded jam nut may fail to hold torque, causing the primary fastener to back out. Keeping a jam nut in sound condition helps prevent unexpected disassembly of bolted connections. Verify the serial number or application, then call (562) 693-7748.

Part number variants: CT20210000, ct20210000