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Description
5601 – Key Stock (Blue) 12" x 1/4" Rotary (OEM-Spec)
The 5601 Key Stock is a precision-machined metal key designed to provide secure shaft-to-hub torque transmission in rotary drive systems. Typically finished in a blue protective coating for corrosion resistance and identification, this key stock measures 12" in length with a 1/4" rectangular cross-section, making it ideal for custom length cutting and fitting in mower rotors, pulleys, couplings, and other rotary component hubs. Built to OEM standards for strength and fit, the 5601 key stock ensures consistent performance and smooth power transfer in commercial and residential equipment applications.
Product Details
Manufacturer Part Number: 5601
Brand: OEM-Spec Key Stock
Part Type: Machine Key (Shaft-to-Hub)
Dimensions: 12″ long × 1/4″ wide × standard thickness
Function: Provides positive torque transfer between shaft and mating hub
Material: High-strength spring steel (blue-coated for identification / corrosion resistance)
Application: Rotary shaft, pulley, coupling, or gear mounting
Construction: Precision ground key with protective finish
OEM Status: OEM-Spec quality replacement item
Function
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Fits into matching keyways on shafts and hubs to transfer torque
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Helps prevent slippage between rotating components
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Ensures positive mechanical engagement for reliable power transmission
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Blue coating aids corrosion resistance and visual identification
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Provides accurate fit for rotary drive elements in mower and equipment systems
Compatible With
The 5601 Key Stock is suitable for use in a range of rotary drives, including:
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Mower spindles, pulleys, and shaft couplings with 1/4″ keyways
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Custom or repair applications requiring a 12″ long key stock piece
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Equipment where torque must be reliably transferred from shaft to hub
Note: Always verify shaft keyway size and orientation before cutting to length for proper fit.
How It’s Used
This key stock installs between a shaft and the mating hub:
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Measure Keyway: Verify shaft keyway width and depth match 1/4″ profile.
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Mark Length: Mark the required length of the key in the 12″ stock.
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Cut to Size: Use a hacksaw or abrasive cutting tool to cut the key stock.
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Deburr Edges: Smooth cut edges with a file to ensure a clean fit.
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Install Key: Insert the key into the shaft keyway.
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Mount Hub/Pulley: Slide the mating hub or pulley onto the shaft, capturing the key in both keyways.
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Secure Assembly: Tighten set screws, bolts, or retainer hardware per equipment specification.
Proper fit prevents vibration, slippage, and premature wear in drive systems.
Suggested Maintenance
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Inspect key and keyway for wear or deformation during service
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Replace if the key becomes rounded or if torque slippage occurs
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Keep shaft and keyway clean of debris before installation
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Ensure proper lubrication if specified in service procedures
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Use OEM-spec key stock to match original mechanical tolerances
The 5601 Key Stock (Blue) 12″ x 1/4″ Rotary is a versatile OEM-spec torque transmission component designed to deliver precise fit, reliable mechanical engagement, and long service life in compatible rotary drive systems.
