Description
11990170 – Wright Smooth Flange Bolt 3/8-16 x 1 1/4″ ZB8 (Genuine OEM Part)
The Wright 11990170 is a genuine OEM smooth flange bolt designed to provide secure and reliable fastening for compatible Wright commercial mowers and outdoor power equipment. This bolt features 3/8-16 threads, a 1 1/4-inch length, and an integrated smooth flange head, which distributes clamping load over a wider surface to prevent pull-through and eliminate the need for a separate washer.
Manufactured to Wright’s original equipment standards, this flange bolt is made from high-strength steel with a ZB8 corrosion-resistant coating, helping protect against rust and wear in outdoor operating conditions. Using genuine Wright hardware ensures correct fit, reliable performance, and long service life.
Product Details
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Manufacturer Part Number: 11990170
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Brand: Wright
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Part Type: Smooth Flange Bolt
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Thread Size: 3/8-16
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Length: 1 1/4 inches
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Finish: ZB8 corrosion-resistant coating
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System: Fastening hardware
Function
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Provides strong, secure clamping force
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Integrated smooth flange distributes load and eliminates need for washer
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Designed for structural and component mounting applications
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Resists corrosion and wear in outdoor environments
Compatibility
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Fits select Wright commercial mower models where this OEM bolt is specified
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Used in structural and assembly points requiring a smooth flange head
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Always verify part number and bolt size before installation
How It’s Used
This smooth flange bolt installs into threaded holes on structural or component assemblies. The integrated flange delivers a broad bearing surface to help ensure stable, even clamping pressure and prevent damage to softer mating surfaces.
Proper torque to manufacturer specifications helps ensure secure fastening and long-term equipment performance.
Suggested Maintenance
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Inspect fasteners during routine service
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Replace if corroded, bent, or with damaged threads
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Ensure proper torque values during installation
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Use OEM-specified hardware for best fit and reliability
The Wright 11990170 Smooth Flange Bolt 3/8-16 x 1 1/4″ ZB8 is a dependable hardware solution for secure assembly and load distribution in Wright outdoor power equipment applications.
