WASHER (Komatsu KO3EB-34-12920)

A worn washer can compromise the clamping force of a bolted joint, leading to loosening over time. This aftermarket replacement part references the Komatsu catalog and carries the part number KO3EB-34-12920. The washer functions as a load-distributing spacer placed under a fastener head or nut. Its plain mechanical role is to prevent galling and distribute the fastener's load evenly across the mating surface. A common failure consequence is that a crushed or missing washer allows the fastener to embed into the material, reducing preload and risking joint separation. During routine service, a washer may be found flattened or split, indicating it has exceeded its service limit. Verify the serial number or application, then call (562) 693-7748.

Part number variants: KO3EB-34-12920, ko3eb-34-12920, KO3EB3412920, ko3eb3412920