00591-60007-81

Frequently Asked Questions

Q: What is Toyota OEM lockwasher 00591-60007-81 and where is it used?
A: Part number 00591-60007-81 is a Toyota OEM lockwasher made from hardened SAE 1055 carbon steel. It is designed for manual pallet jack assemblies, particularly in load wheel and axle connections. The lockwasher prevents fasteners from loosening due to vibration during equipment operation.

Q: What is the material and hardness of lockwasher 00591-60007-81?
A: This lockwasher is manufactured from hardened SAE 1055 carbon steel or equivalent, specifically selected for high-vibration material handling environments. The hardened steel provides excellent spring tension retention and prevents loosening of critical fasteners in load-bearing assemblies.

Q: Is there a cross-reference or equivalent part number for 00591-60007-81?
A: Yes. Cross-reference part number TO00591-04429-81 is equivalent to 00591-60007-81. Both lockwashers are compatible and interchangeable for Toyota manual pallet jack load wheel and axle assemblies.

Q: Can I use a standard lockwasher instead of Toyota OEM part 00591-60007-81?
A: While standard lockwashers may fit, the hardened SAE 1055 material and specifications of OEM part 00591-60007-81 are engineered for the specific stress and vibration conditions in Toyota equipment. Using non-OEM substitutes may result in fastener loosening, assembly failure, or safety hazards. For critical load wheel and axle connections, always use the correct OEM lockwasher.

Q: How often does lockwasher 00591-60007-81 need to be replaced?
A: Lockwashers do not wear out through normal use. Replace 00591-60007-81 only when disassembling axle or fastener connections for service, or if visible damage, corrosion, or deformation is observed. Inspect washers periodically for cracks or loss of spring tension, particularly on equipment used in wet or corrosive environments.