Description
The 1-3/4" USS Flat Washer is a heavy-duty, general-purpose washer designed for use with 1-3/4-inch diameter bolts, screws, and studs. Compliant with United States Standard (USS) specifications, this washer features a broad outer diameter and solid thickness, making it ideal for distributing loads and protecting structural surfaces in demanding industrial and construction applications.
Specifications:
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Inner Diameter (I.D.): 1-13/16"
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Outer Diameter (O.D.): 4-3/4"
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Thickness: 7/16" (nominal)
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Standard: USS (United States Standard)
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Material: Typically low carbon steel; options include 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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Large Outer Diameter: Expands load distribution over a greater surface area to minimize material deformation and improve joint integrity.
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Designed for 1-3/4" Fasteners: Sized with a clearance hole to accommodate standard tolerances for ease of assembly and alignment.
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USS Standard Fit: Looser fit compared to SAE washers, offering flexibility in high-load, large-scale installations.
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Flat, Durable Surface: Ensures even torque transfer, reducing friction and wear during tightening.
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Corrosion Protection Options: Available finishes support long-term durability in indoor, outdoor, marine, and chemically exposed environments.
Applications:
Engineered for use in high-stress environments, the 1-3/4" USS washer is commonly used in:
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Structural steel connections and industrial framing
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Bridge, highway, and infrastructure installations
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Agricultural, mining, and heavy construction equipment
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Energy and utility sector hardware
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OEM manufacturing and large-scale repair operations
