Description
The 5/8" USS Flat Washer is a robust, general-purpose washer engineered for use with 5/8-inch diameter bolts, screws, and studs. Built to United States Standard (USS) dimensions, this washer features a wide outer diameter and solid thickness to evenly distribute load and protect mating surfaces in structural, mechanical, and industrial fastening applications.
Specifications:
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Inner Diameter (I.D.): 21/32"
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Outer Diameter (O.D.): 1-3/4"
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Thickness: 5/32" (nominal)
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Standard: USS (United States Standard)
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Material: Typically low carbon steel; 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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Wider Bearing Surface: Large outer diameter effectively distributes clamping pressure, minimizing damage to underlying materials.
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Designed for 5/8" Fasteners: Clearance hole ensures proper fit and ease of installation with standard bolts.
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USS Tolerance Profile: Looser than SAE washers, providing flexibility for general-purpose and high-tolerance applications.
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Flat, Consistent Surface: Promotes even torque application and improves fastener stability under load.
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Finish Variety: Available in corrosion-resistant coatings for indoor, outdoor, and industrial use.
Common Applications:
The 5/8" USS flat washer is widely used in moderate to heavy-duty fastening scenarios, such as:
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Structural steel fabrication and framing
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Agricultural, construction, and utility equipment
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Automotive and trailer hardware
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Machinery and equipment mounting
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OEM manufacturing and repair operations
