Product Description
Locking nut
Frequently Asked Questions
Q: What is the 00591-39599-81 locking nut used for?
A: The 00591-39599-81 is a Toyota OEM locking nut used in forklift fastening applications. Locking nuts are designed to prevent vibration-induced loosening on pivot points, mast assemblies, and load-bearing connections.
Q: Which Toyota forklift models and assemblies use the 00591-39599-81 locking nut?
A: The 00591-39599-81 is a Toyota OEM fastener for forklifts. Exact application depends on your lift model, mast type, and load rating. Confirm the location and bolt size compatibility with your equipment before ordering.
Q: What is the thread size and material of the 00591-39599-81 locking nut?
A: The 00591-39599-81 is manufactured from hardened steel with a nylon or fiber insert for locking function. The exact thread pitch and diameter are specific to its assembly location on Toyota forklifts.
Q: When should a locking nut be replaced?
A: Replace the 00591-39599-81 if the nylon insert is worn or missing, causing the nut to spin freely without holding torque. Also replace if the nut is cracked, corroded, or damaged. Locking nuts lose effectiveness after removal and should not be reused.
Q: Can the 00591-39599-81 be reused after disassembly?
A: Locking nuts with nylon inserts lose their locking properties after removal. Always replace with a new nut to maintain vibration resistance and safety on critical fastening points. Reusing worn locking nuts risks assembly loosening.