LOCKNUT - TOP LOCK (CAT CT1K6872A)

A damaged locknut can allow threaded fasteners to loosen under vibration, leading to component separation. The locknut type uses a top-lock design that deforms slightly during installation to resist backing off. This aftermarket replacement part references the CAT catalog number CT1K6872A. The locknut's plain mechanical function is to secure a bolt or stud by creating friction against the threads. A common failure consequence is that a worn locknut will not maintain clamping force, causing joints to loosen over time. Keeping a locknut in sound condition helps prevent unexpected disassembly of bolted connections. Verify the serial number or application, then call (562) 693-7748.

Part number variants: CT1K6872A, ct1k6872a