Description
The 5/16" USS Flat Washer is a standard, general-purpose washer designed for use with 5/16-inch diameter bolts, screws, and studs. Built to United States Standard (USS) specifications, this washer offers a slightly oversized outer diameter and modest thickness, making it ideal for distributing clamping forces and protecting surface materials in a wide range of mechanical and structural applications.
Specifications:
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Inner Diameter (I.D.): 11/32"
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Outer Diameter (O.D.): 3/4"
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Thickness: 5/64" (nominal)
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Standard: USS (United States Standard)
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Material: Typically low carbon steel; also offered 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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Moderate Load Distribution: Helps spread load over a broader area to prevent damage or pull-through in base materials.
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Sized for 5/16" Fasteners: Offers a clearance fit that accommodates bolt tolerances for quick and accurate assembly.
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USS Standard Dimensions: Looser fit than SAE washers, providing greater flexibility in general-purpose and structural applications.
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Flat Surface Design: Improves torque consistency and reduces friction during fastener tightening.
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Corrosion Protection Options: Suitable for indoor, outdoor, and light industrial environments depending on the selected finish.
Common Applications:
The 5/16" USS washer is used in a wide variety of fastening tasks, including:
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Mechanical equipment assembly
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Furniture and fixture mounting
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Sheet metal and light structural connections
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DIY, maintenance, and repair operations
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Automotive and trailer component installations
