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Description
11990021 – Wright Allen Shoulder Bolt 1/2" x 1 1/4" (Genuine OEM Part)
The Wright 11990021 is a genuine OEM Allen shoulder bolt designed to provide precision fastening where controlled spacing and smooth movement are essential. Featuring a 1/2-inch diameter with a 1 1/4-inch shoulder length, this bolt is ideal for pivot points, linkage connections, and applications where a smooth bearing surface is required.
Manufactured to Wright’s original equipment specifications, this shoulder bolt is made from hardened steel with precise dimensions for reliable performance. Using genuine Wright hardware ensures proper fit, accurate alignment, and long-lasting service.
Product Details
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Manufacturer Part Number: 11990021
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Brand: Wright
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Part Type: Allen Shoulder Bolt
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Diameter: 1/2 inch
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Shoulder Length: 1 1/4 inches
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Head Style: Allen / Socket head
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System: Fastening / Pivot or linkage system
Function
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Provides a smooth shoulder surface for pivoting or sliding components
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Maintains proper spacing and alignment
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Offers secure fastening with controlled motion
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Ensures accurate thread engagement and torque retention
Compatibility
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Fits select Wright commercial mower models
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Commonly used where a shoulder bolt is specified for moving parts
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Always verify part number and application before installation
How It’s Used
This Allen shoulder bolt installs into a threaded hole where the shoulder functions as a bearing surface for linked components, rollers, or pivoting parts. Its socket head allows installation in areas with limited clearance while providing secure fastening.
Proper installation and torque are essential for reliable performance.
Suggested Maintenance
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Inspect shoulder bolts during routine service
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Replace if worn, corroded, or if shoulder surface is scored
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Use correct Allen tools to avoid head damage
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Replace with OEM hardware for best fit and function
The Wright 11990021 Allen Shoulder Bolt 1/2" x 1 1/4" is a precision fastener ideal for applications where strength, alignment, and controlled motion are required.
