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Description
11990197 – Wright Carriage Bolt 5/8-11 x 8.5" Z5 (Genuine OEM Part)
The Wright 11990197 is a genuine OEM carriage bolt engineered to provide strong, secure, and vibration-resistant fastening for compatible Wright commercial mowers and outdoor power equipment. Featuring a 5/8-11 thread size and 8.5-inch length, this bolt is ideal for heavy structural, frame, or deck mounting applications where a smooth, rounded head and anti-rotation performance are required.
Manufactured to Wright’s original equipment specifications, this carriage bolt is constructed from hardened steel with a Z5 corrosion-resistant finish to ensure long-lasting performance in outdoor and high-stress conditions. The square shoulder beneath the head seats into square holes or slots, preventing rotation during installation and ensuring dependable clamping force.
Product Details
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Manufacturer Part Number: 11990197
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Brand: Wright
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Part Type: Carriage Bolt
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Thread Size: 5/8-11
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Length: 8.5 inches
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Finish: Z5 corrosion-resistant coating
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System: Fastening hardware
Function
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Provides secure fastening with a smooth, domed head
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Square shoulder locks into place to prevent rotation
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Maintains clamping force under vibration and load
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Resists corrosion and wear in outdoor environments
Compatibility
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Fits select Wright commercial mower models
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Used in structural, deck, or high-load mounting locations
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Always verify part number and bolt specifications before installation
How It’s Used
This carriage bolt installs into square holes or mating slots where its square shoulder seats securely, preventing rotation as the nut is tightened. It is commonly used where a flush, rounded head and strong anti-rotation performance are needed in structural assemblies.
Proper torque to Wright specifications ensures secure assembly and long-term reliability.
Suggested Maintenance
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Inspect carriage bolts during routine equipment service
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Replace if bent, corroded, or with damaged threads
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Ensure shoulder seats properly to prevent rotation
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Use OEM-specified hardware for optimal performance
The Wright 11990197 Carriage Bolt 5/8-11 x 8.5" Z5 is a heavy-duty fastening solution ideal for demanding structural and deck mounting applications where strength and vibration resistance are essential.
