13990041 – Wright Flat Washer, 3/8" × 1-1/2" × 0.15", Zinc-Plated Z5 (Genuine Wright OEM Part)
The Wright 13990041 is a genuine OEM flat washer, manufactured to 3/8-inch inner diameter × 1-1/2-inch outer diameter × 0.15-inch thickness specifications and finished with a Z5 zinc plating for enhanced corrosion resistance. This washer is designed to provide reliable load distribution and secure fastening in compatible Wright lawn and turf equipment, especially in applications exposed to vibration and outdoor conditions.
Manufactured to Wright original equipment standards, the washer is produced from high-strength steel to ensure durability, resistance to deformation, and long service life. Using a genuine Wright flat washer ensures correct fitment, proper clamping force, and factory-approved fastening performance.
Product Details
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Manufacturer Part Number: 13990041
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Brand: Wright
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Part Type: Flat Washer
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Inner Diameter: 3/8 inch
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Outer Diameter: 1-1/2 inches
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Thickness: 0.15 inch
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Finish: Zinc-Plated (Z5)
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System: Fastening / hardware system
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Function: Load distribution and surface protection
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Material: High-strength steel, zinc-plated
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OEM Status: Genuine Wright OEM replacement
Function
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Distributes clamping force evenly under fasteners
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Helps prevent surface damage and fastener pull-through
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Improves fastener stability under vibration
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Supports secure and long-lasting assemblies
Compatible With
The Wright 13990041 Flat Washer is used on select Wright equipment, including:
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Wright stand-on mowers
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Wright commercial lawn and turf equipment
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Wright deck, chassis, and frame assemblies
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Wright hardware applications requiring 3/8-inch flat washers
(Exact compatibility depends on the specific Wright model and fastening location.)
How It’s Used
This washer installs between the bolt head or nut and the mounting surface, increasing the contact area to improve load distribution and protect components. Proper seating ensures stable fastening and reduced loosening during operation.
Always match the washer with the correct 3/8-inch fastener.
Suggested Maintenance
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Inspect washers during routine service for bending, cracking, or corrosion
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Replace washers that show deformation or excessive wear
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Ensure washers remain flat and properly seated
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Use OEM-specified washers to maintain correct clamping force
The Wright 13990041 Flat Washer (3/8" × 1-1/2" × 0.15", Z5) is used in OEM-specified Wright fastening systems where durability, corrosion resistance, and secure load distribution are essential.
