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Description
15990003 – Machine Key 1/4" x 1/4" x 1" (Square Key)
The 15990003 Machine Key is a precision square machine key designed to secure rotating components such as pulleys, gears, or couplings to a shaft. Measuring 1/4 inch x 1/4 inch x 1 inch, this key ensures positive torque transfer and helps prevent slippage between the shaft and mounted component.
Manufactured to standard machine key dimensions, this part provides dependable fit and durability in lawn and turf equipment, industrial machinery, and mechanical drive applications.
Product Details
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Part Number: 15990003
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Part Name: Machine Key (Square Key)
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Key Size: 1/4" x 1/4" x 1"
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Type: Square Machine Key
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Material: Hardened Steel
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Condition: New
Function & Features
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Secures pulleys, gears, and couplings to shafts
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Provides positive torque transmission
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Precision-cut for proper fit in keyways
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Hardened steel construction for strength and wear resistance
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Suitable for mechanical and power transmission applications
Applications
The 15990003 Machine Key is used on select lawn mowers, outdoor power equipment, and mechanical drive systems where a 1/4" x 1/4" x 1" square key is specified.
Exact compatibility depends on shaft and component keyway dimensions.
This standard square machine key is ideal for maintaining secure shaft-to-component connections and reliable power transmission in mechanical systems.
