Description
11990168 Wright Carriage Bolt, Short Neck Custom 1/2-20 x 4 3/4″ Z5 (Genuine OEM Part)
The Wright 11990168 is a genuine OEM carriage bolt with a short neck design, engineered for secure, vibration-resistant fastening on compatible Wright commercial mowers and outdoor power equipment. Featuring a 1/2-20 thread size and a 4 3/4-inch length, this custom-specified carriage bolt is ideal for structural and deck applications where a smooth, rounded head and anti-rotation performance are required in tighter clearance areas.
Manufactured to Wrights original equipment specifications, this bolt is made from hardened steel with a Z5 corrosion-resistant finish to resist rust, moisture, and demanding outdoor environments. The square shoulder beneath the head seats into square holes or mating slots, preventing rotation during assembly and ensuring dependable clamping force.
Product Details
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Manufacturer Part Number: 11990168
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Brand: Wright
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Part Type: Carriage Bolt (Short Neck, Custom)
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Thread Size: 1/2-20
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Length: 4 3/4 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 seats securely and prevents rotation
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Custom short neck design for tight clearance applications
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Resists corrosion, wear, and vibration under load
Compatibility
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Fits select Wright commercial mower models
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Used where a shorter neck carriage bolt is specified
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Always verify part number and bolt size before installation
How Its Used
This custom short neck carriage bolt installs into square holes or mating slots, where its square shoulder locks the fastener in place while the smooth, rounded head remains flush. Its commonly used where standard carriage bolts would interfere with adjacent components.
Proper torque to Wright specifications ensures secure assembly and long-term reliability.
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 shoulder seats properly to prevent rotation
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Use OEM-specified hardware for optimal performance
The Wright 11990168 Carriage Bolt, Short Neck Custom 1/2-20 x 4 3/4″ Z5 is a precision fastening solution ideal for structural and deck mounting applications where clearance constraints and anti-rotation performance are essential.
