Description
The 7/8" USS Flat Washer is a heavy-duty, general-purpose washer designed for use with 7/8-inch diameter bolts, screws, and studs. Built to meet United States Standard (USS) specifications, this washer features a broad outer diameter and substantial thickness—engineered to distribute clamping forces, minimize surface deformation, and improve joint stability in high-stress fastening applications.
Specifications:
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Inner Diameter (I.D.): 29/32"
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Outer Diameter (O.D.): 2-1/4"
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Thickness: 13/64" (nominal)
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Standard: USS (United States Standard)
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Material: Commonly 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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Extended Load-Bearing Area: Oversized O.D. helps prevent damage or embedding in softer materials under high clamping loads.
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Designed for 7/8" Fasteners: Clearance hole ensures a proper fit with tolerance flexibility for quick, secure installation.
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USS Standard Fit: Looser tolerance than SAE washers—ideal for structural, mechanical, and heavy-equipment assemblies.
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Flat, Smooth Finish: Promotes consistent torque transfer and improved fastener performance.
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Corrosion-Resistant Options: Suitable for demanding environments including outdoor, marine, and industrial settings.
Common Applications:
The 7/8" USS washer is used in a variety of heavy-duty and structural environments, such as:
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Steel construction and framing
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Agricultural, mining, and heavy machinery
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Infrastructure and utility installations
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Automotive and trailer assemblies
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OEM and maintenance repair operations
