WASHER (Komatsu KO3EB-50-31430)

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 number KO3EB-50-31430. The washer functions as a load-distributing spacer placed under a fastener head or nut. Its plain mechanical role is to prevent galling between the fastener and the mating surface. A common failure consequence is that a crushed or missing washer allows the fastener to embed into the softer material, reducing preload. During a routine fastener check, a deformed washer may indicate overtightening or corrosion. Verify the serial number or application, then call (562) 693-7748.

Part number variants: KO3EB-50-31430, ko3eb-50-31430, KO3EB5031430, ko3eb5031430