Description
3296-67 NI Lock Nut – Toro Genuine OEM Part (.750-16 Steel YZ Heavy Thin)
The Toro 3296-67 NI Lock Nut (NUT-LOCK, NI) is a genuine OEM replacement locking nut designed to provide secure fastening and superior vibration resistance in Toro outdoor power equipment. This nylon-insert (NI) lock nut features a .750-16 thread size and a heavy-duty thin-profile design, making it ideal for high-load applications where space is limited and loosening from vibration is a concern.
Constructed from durable steel with a YZ (yellow zinc) corrosion-resistant finish, the Toro 3296-67 lock nut is built to withstand demanding outdoor and commercial operating conditions.
Product Details
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Part Number: 3296-67
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Brand: Toro
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Part Type: NI Lock Nut (Nylon Insert Lock Nut)
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Thread Size: .750-16
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Material: Steel (STL)
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Finish: YZ (Yellow Zinc Coated)
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Style: Heavy Duty, Thin Profile Lock Nut
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Application: Secure Equipment Fastening
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OEM Status: Genuine Toro OEM Part
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Condition: New
Function
This Toro NI lock nut is designed to:
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Prevent loosening caused by vibration and heavy equipment operation
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Provide secure locking retention with nylon insert design
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Support heavy-duty assemblies with a thin-profile configuration
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Replace worn, stripped, or missing OEM lock nuts
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Maintain safe and reliable equipment performance
Compatibility
Used across many Toro lawn and garden equipment applications, including:
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Lawn mowers
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Riding mowers
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Zero-turn mowers
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Deck, frame, and drive system assemblies
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Commercial turf equipment service and repair needs
⚠️ Always verify thread size and nut specification with your Toro parts diagram before ordering to ensure correct fitment.
Installation / Usage
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Thread the 3296-67 lock nut onto the bolt or stud
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Tighten securely using proper tools
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Torque to Toro manufacturer specifications as required
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Replace nylon lock nuts after repeated removal for best retention
Maintenance Tips
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Inspect locking nuts regularly for corrosion or thread damage
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Replace lock nuts that have lost locking resistance
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Use OEM hardware for proper fit and safe operation
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Avoid overtightening beyond specified torque values
