Description
The 9/16" USS Flat Washer is a medium-duty, general-purpose washer designed for use with 9/16-inch diameter bolts, screws, and studs. Built to United States Standard (USS) specifications, this washer features a wide outer diameter and moderate thickness to help distribute fastener load, protect surfaces, and improve torque consistency across a variety of structural and mechanical applications.
Specifications:
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Inner Diameter (I.D.): 19/32"
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Outer Diameter (O.D.): 1-1/2"
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Thickness: 9/64" (nominal)
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Standard: USS (United States Standard)
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Material: Typically low carbon steel; also available in stainless steel, brass, or specialty alloys
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Finish Options: Plain, zinc-plated, hot-dip galvanized, black oxide, or other corrosion-resistant coatings
Key Features:
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Reliable Load Distribution: Broad outer diameter spreads clamping forces across a larger area, minimizing embedment and material deformation.
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Sized for 9/16" Fasteners: Clearance hole offers compatibility with standard bolt sizes and installation tolerances.
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USS Tolerance Fit: Looser than SAE washers, allowing greater flexibility in general and structural use where precise fit is not critical.
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Flat and Smooth Surface: Supports even torque transfer and improves joint performance during high-stress fastening.
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Corrosion-Resistant Finish Options: Available in multiple coatings to suit diverse environmental conditions.
Common Applications:
The 9/16" USS washer is commonly used in moderate to heavy-duty applications across various industries, such as:
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Industrial machinery and equipment
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Agricultural and construction hardware
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Steel framing and support systems
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Automotive, trailer, and heavy vehicle assemblies
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OEM and maintenance repair operations
