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Description
11990257 – Wright Carriage Bolt 5/8-11 x 7 1/2" Z5 (Genuine OEM Part)
The Wright 11990257 is a genuine OEM carriage bolt engineered to deliver secure, vibration-resistant fastening for compatible Wright commercial mowers and outdoor power equipment. Featuring a 5/8-11 thread size and 7 1/2-inch length, this bolt is ideal for structural frame, deck assembly, and heavy-load mounting applications where a smooth, rounded head and anti-rotation performance are essential.
Manufactured to Wright’s original equipment specifications, this carriage bolt is made from hardened steel with a Z5 corrosion-resistant finish to resist rust, moisture, and demanding outdoor conditions. The square shoulder beneath the head seats into square holes or mating slots, preventing rotation during installation and ensuring a reliable clamping force.
Product Details
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Manufacturer Part Number: 11990257
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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: 7 1/2 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 operational 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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Commonly used in structural, deck, or subassembly 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 to prevent rotation as the nut is tightened. This secure fit makes it ideal for structural assemblies where a flush rounded head and anti-rotation performance are required.
Proper torque to Wright specifications ensures a secure and long-lasting connection.
Suggested Maintenance
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Inspect carriage bolts during routine service
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Replace if bent, corroded, or with damaged threads
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Ensure the shoulder seats properly to prevent rotation
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Use OEM-specified hardware for optimal performance
The Wright 11990257 Carriage Bolt 5/8-11 x 7 1/2" Z5 is a durable, robust fastening solution for demanding structural and deck mounting applications on Wright outdoor power equipment.
