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Description
3296-51 NI Lock Nut – Toro Genuine OEM Part (.750-10 Steel YZ Light)
The Toro 3296-51 NI Lock Nut (NUT-LOCK, NI) is a genuine OEM replacement locking nut designed to provide secure fastening and vibration resistance in Toro outdoor power equipment. This nylon-insert (NI) lock nut features a .750-10 thread size, offering strong retention in heavy-duty applications where loosening from vibration or repeated use is a concern.
Constructed from durable steel with a YZ (yellow zinc) corrosion-resistant finish, the Toro 3296-51 lock nut is built to withstand demanding outdoor operating conditions.
Product Details
Part Number: 3296-51
Brand: Toro
Part Type: NI Lock Nut (Nylon Insert Lock Nut)
Thread Size: .750-10
Material: Steel (STL)
Finish: YZ (Yellow Zinc Coated)
Style: Light Duty Lock Nut
Application: Secure Equipment Fastening
OEM Status: Genuine Toro OEM Part
Condition: New
Function
This Toro NI lock nut is designed to:
Prevent loosening caused by vibration and heavy equipment use
Provide secure locking retention with nylon insert design
Replace worn, stripped, or missing OEM lock nuts
Maintain safe and reliable assembly performance
Compatibility
Used across many Toro lawn and garden equipment applications, including:
Lawn mowers
Riding mowers
Zero-turn mowers
Deck, frame, and drive system assemblies
Commercial turf equipment repair and service needs
⚠️ Always verify thread size and nut specification with your Toro parts diagram before ordering to ensure correct fitment.
Installation / Usage
Thread the 3296-51 lock nut onto the bolt or stud
Tighten securely using proper tools
Torque to Toro manufacturer specifications as required
Replace nylon lock nuts after repeated removal for best retention
Maintenance Tips
Inspect locking nuts regularly for corrosion or thread damage
Replace lock nuts that have lost locking resistance
Use OEM hardware for proper fit and safe operation
Avoid overtightening beyond specified torque values
