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Description
11990117 – Wright Hex Bolt 1/2-20 x 4 1/2" Z5 (Custom) (Genuine OEM Part)
The Wright 11990117 is a genuine OEM hex bolt engineered for secure, dependable fastening on compatible Wright commercial mowers and outdoor power equipment. Featuring a 1/2-20 thread size and 4 1/2-inch length, this custom-specified bolt is ideal for structural, deck, or suspension mounting applications where strength, proper clamping force, and long-term reliability are required.
Manufactured to Wright’s original equipment specifications, this hex bolt is made from hardened steel with a Z5 corrosion-resistant coating to withstand moisture, vibration, and extended service in outdoor environments. Using authentic Wright hardware ensures correct fit, dependable performance, and long service life.
Product Details
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Manufacturer Part Number: 11990117
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Brand: Wright
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Part Type: Hex Bolt
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Thread Size: 1/2-20
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Length: 4 1/2 inches
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Finish: Z5 corrosion-resistant coating
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System: Fastening hardware
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Custom: Yes (OEM custom length/configuration)
Function
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Provides secure fastening in structural and deck assemblies
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Maintains clamping force under vibration and load
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Resists corrosion, wear, and outdoor exposure
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Ensures proper bolt fit and torque retention
Compatibility
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Fits select Wright commercial mower models
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Used where Wright specifies a custom-length hex bolt
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Always verify part number and bolt specifications before installation
How It’s Used
This hex bolt installs into threaded holes or paired with nuts on structural or subassembly mounting points. Proper installation with correct torque helps ensure secure fastening and long-term equipment reliability.
Suggested Maintenance
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Inspect bolts during routine service
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Replace if bent, corroded, or with damaged threads
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Tighten to manufacturer-specified torque values
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Use OEM-specified hardware for secure performance
The Wright 11990117 Hex Bolt 1/2-20 x 4 1/2" Z5 (Custom) is a reliable, heavy-duty fastening solution for applications requiring a precise custom bolt configuration.

