TO 00591-04429-81

Frequently Asked Questions

Q: What is the purpose of Toyota lockwasher TO 00591-04429-81?
A: This OEM lockwasher is designed to maintain fastener tension in electric lift truck assemblies under continuous vibration. The spring-tempered construction prevents bolts and screws from loosening due to repeated vibration cycles during equipment operation.

Q: What material is this lockwasher made from?
A: This part is constructed from spring-tempered carbon steel. Spring temper provides the necessary elasticity and recovery characteristics to maintain bolt preload and resist vibration-induced loosening over extended equipment runtime.

Q: Why is spring temper important for this application?
A: Spring temper allows the washer to flex under fastener pressure while maintaining mechanical memory to return to its original shape. This elastic recovery helps sustain clamping force on the fastener, preventing the bolt from backing out under continuous vibration typical in electric lift truck operation.

Q: Which Toyota electric lift truck models use this lockwasher?
A: This OEM lockwasher is compatible with select Toyota electric lift truck models and assemblies. Confirm your equipment model and fastener size match before ordering to ensure proper compatibility and function.

Q: How is this lockwasher different from a standard washer?
A: Standard washers only distribute load. This Toyota lockwasher combines load distribution with active vibration control through spring temper. The spring tension continuously works to maintain bolt preload, providing superior anti-vibration protection compared to flat washers in high-vibration environments.

Q: Are there cross-reference or equivalent part numbers?
A: No cross-reference or superseded part numbers have been identified for TO 00591-04429-81. This is a Toyota-specific OEM component. Order by exact part number for guaranteed fitment.