Flat Washers
2,158 products
Flat washers evenly distribute pressure when a bolt or screw is tightened. Its thin, plate-shape increases surface area to prevent the loosening and pullout of a fastener. They also relieve surface friction and can be used as spacers when additional clearance between objects is necessary. Flat washers are available in both standard and bulk pack quantities.
Standard Flat Washers
Standard flat washers provide a smooth surface under the head of a nut or bolt to prevent loosening and damage to the work surface. These round washers also minimize heat and friction during the installation of a threaded fastener. They are used for general purpose applications across a wide range of industries.
Grade 2 Steel
Finish Type: Unspecified
Standard Flat Washers Grade 2 Steel Finish Type: Unspecified, sorted by For Screw Size, custom
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Plain
Standard Flat Washers Grade 2 Steel Plain, sorted by For Screw Size, custom
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Black Oxide
Standard Flat Washers Grade 2 Steel Black Oxide, sorted by For Screw Size, custom
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Zinc Plated
Standard Flat Washers Grade 2 Steel Zinc Plated, sorted by For Screw Size, custom
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Zinc Yellow
Standard Flat Washers Grade 2 Steel Zinc Yellow, sorted by For Screw Size, custom
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Chrome Plated
Standard Flat Washers Grade 2 Steel Chrome Plated, sorted by For Screw Size, custom
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Hot Dipped Galvanized
Standard Flat Washers Grade 2 Steel Hot Dipped Galvanized, sorted by For Screw Size, custom
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Grade 5 Steel
Black Oxide
Standard Flat Washers Grade 5 Steel Black Oxide, sorted by For Screw Size, custom
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Zinc Plated
Standard Flat Washers Grade 5 Steel Zinc Plated, sorted by For Screw Size, custom
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Zinc Yellow
Standard Flat Washers Grade 5 Steel Zinc Yellow, sorted by For Screw Size, custom
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Grade 8 Steel
Plain
Standard Flat Washers Grade 8 Steel Plain, sorted by For Screw Size, custom
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Black Oxide
Standard Flat Washers Grade 8 Steel Black Oxide, sorted by For Screw Size, custom
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Zinc Yellow
Standard Flat Washers Grade 8 Steel Zinc Yellow, sorted by For Screw Size, custom
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Hot Dipped Galvanized
Standard Flat Washers Grade 8 Steel Hot Dipped Galvanized, sorted by For Screw Size, custom
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Class 8.8 Steel
Black Oxide
Standard Flat Washers Class 8.8 Steel Black Oxide, sorted by For Screw Size, custom
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Zinc Plated
Standard Flat Washers Class 8.8 Steel Zinc Plated, sorted by For Screw Size, custom
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Grade 2 Stainless Steel
Plain
Standard Flat Washers Grade 2 Stainless Steel Plain, sorted by For Screw Size, custom
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18-8 Stainless Steel
Plain
Standard Flat Washers 18-8 Stainless Steel Plain, sorted by For Screw Size, custom
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Advanced Corrosion Resistance
Standard Flat Washers 18-8 Stainless Steel Advanced Corrosion Resistance, sorted by For Screw Size, custom
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316 Stainless Steel
Plain
Standard Flat Washers 316 Stainless Steel Plain, sorted by For Screw Size, custom
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Advanced Corrosion Resistance
Standard Flat Washers 316 Stainless Steel Advanced Corrosion Resistance, sorted by For Screw Size, custom
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Grade 2 Brass
Plain
Standard Flat Washers Grade 2 Brass Plain, sorted by For Screw Size, custom
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Grade 2 Titanium
Plain
Standard Flat Washers Grade 2 Titanium Plain, sorted by For Screw Size, custom
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Grade 2 Plastic
Plain
Standard Flat Washers Grade 2 Plastic Plain, sorted by For Screw Size, custom
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Oversized Flat Washers
These washers have a wider surface than standard flat washers to cover oversized holes and distribute the load over a broader area. The expanded surface area provides additional reinforcement for use in sheet metal and plumbing applications.
Grade 2 Steel
Plain
Oversized Flat Washers Grade 2 Steel Plain, sorted by For Screw Size, custom
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Black Oxide
Oversized Flat Washers Grade 2 Steel Black Oxide, sorted by For Screw Size, custom
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Zinc Plated
Oversized Flat Washers Grade 2 Steel Zinc Plated, sorted by For Screw Size, custom
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Hot Dipped Galvanized
Oversized Flat Washers Grade 2 Steel Hot Dipped Galvanized, sorted by For Screw Size, custom
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Grade 8 Steel
Zinc Yellow
Oversized Flat Washers Grade 8 Steel Zinc Yellow, sorted by For Screw Size, custom
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Class 4 Steel
Black Oxide
Oversized Flat Washers Class 4 Steel Black Oxide, sorted by For Screw Size, custom
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Class 8.8 Steel
Black Oxide
Oversized Flat Washers Class 8.8 Steel Black Oxide, sorted by For Screw Size, custom
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Class 10.9 Steel
Zinc Yellow
Oversized Flat Washers Class 10.9 Steel Zinc Yellow, sorted by For Screw Size, custom
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18-8 Stainless Steel
Plain
Oversized Flat Washers 18-8 Stainless Steel Plain, sorted by For Screw Size, custom
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Advanced Corrosion Resistance
Oversized Flat Washers 18-8 Stainless Steel Advanced Corrosion Resistance, sorted by For Screw Size, custom
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316 Stainless Steel
Plain
Oversized Flat Washers 316 Stainless Steel Plain, sorted by For Screw Size, custom
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Advanced Corrosion Resistance
Oversized Flat Washers 316 Stainless Steel Advanced Corrosion Resistance, sorted by For Screw Size, custom
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Narrow Flat Washers
These washers are thinner than standard flat washers and can be installed in tighter spaces. Their light weight makes them ideal for use with softer materials.
18-8 Stainless Steel
Plain
Narrow Flat Washers 18-8 Stainless Steel Plain, sorted by For Screw Size, custom
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SAE Flat Washers
SAE flat washers meet the specifications of the Society of Automotive Engineers (SAE) and are used for a broad range of automotive manufacturing applications. They have smaller inner and outer diameters and less thickness than USS flat washers.
Grade 2 Steel
Finish Type: Unspecified
SAE Flat Washers Grade 2 Steel Finish Type: Unspecified, sorted by For Screw Size, custom
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Black Oxide
SAE Flat Washers Grade 2 Steel Black Oxide, sorted by For Screw Size, custom
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Zinc Plated
SAE Flat Washers Grade 2 Steel Zinc Plated, sorted by For Screw Size, custom
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Zinc Yellow
SAE Flat Washers Grade 2 Steel Zinc Yellow, sorted by For Screw Size, custom
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Grade 8 Steel
Zinc Yellow
SAE Flat Washers Grade 8 Steel Zinc Yellow, sorted by For Screw Size, custom
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Advanced Corrosion Resistance
SAE Flat Washers Grade 8 Steel Advanced Corrosion Resistance, sorted by For Screw Size, custom
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Class 10.9 Steel
Zinc Yellow
SAE Flat Washers Class 10.9 Steel Zinc Yellow, sorted by For Screw Size, custom
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18-8 Stainless Steel
Plain
SAE Flat Washers 18-8 Stainless Steel Plain, sorted by For Screw Size, custom
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316 Stainless Steel
Plain
SAE Flat Washers 316 Stainless Steel Plain, sorted by For Screw Size, custom
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Grade 2 Titanium
Plain
SAE Flat Washers Grade 2 Titanium Plain, sorted by For Screw Size, custom
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USS Flat Washers
These washers meet United States Standard (USS) specifications and engineering requirements for most industrial manufacturing, maintenance, and repair applications. They are thicker than SAE washers and provide a strong connection at the joint to help distribute pressure and prevent leaks.
Grade 2 Steel
Black Oxide
USS Flat Washers Grade 2 Steel Black Oxide, sorted by For Screw Size, custom
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Zinc Plated
USS Flat Washers Grade 2 Steel Zinc Plated, sorted by For Screw Size, custom
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Zinc Yellow
USS Flat Washers Grade 2 Steel Zinc Yellow, sorted by For Screw Size, custom
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Hot Dipped Galvanized
USS Flat Washers Grade 2 Steel Hot Dipped Galvanized, sorted by For Screw Size, custom
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Grade 8 Steel
Zinc Yellow
USS Flat Washers Grade 8 Steel Zinc Yellow, sorted by For Screw Size, custom
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Advanced Corrosion Resistance
USS Flat Washers Grade 8 Steel Advanced Corrosion Resistance, sorted by For Screw Size, custom
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Class 10.9 Steel
Zinc Yellow
USS Flat Washers Class 10.9 Steel Zinc Yellow, sorted by For Screw Size, custom
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18-8 Stainless Steel
Finish Type: Unspecified
USS Flat Washers 18-8 Stainless Steel Finish Type: Unspecified, sorted by For Screw Size, custom
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Plain
USS Flat Washers 18-8 Stainless Steel Plain, sorted by For Screw Size, custom
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316 Stainless Steel
Plain
USS Flat Washers 316 Stainless Steel Plain, sorted by For Screw Size, custom
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Mil. Spec. Flat Washers
These washers meet rigorous U.S. military specifications and standards to ensure high performance and reliability in demanding environments. They are commonly used for defense-specific applications and in industrial and automotive environments.
18-8 Stainless Steel
Plain
Mil. Spec. Flat Washers 18-8 Stainless Steel Plain, sorted by For Screw Size, custom
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Advanced Corrosion Resistance
Mil. Spec. Flat Washers 18-8 Stainless Steel Advanced Corrosion Resistance, sorted by For Screw Size, custom
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Square Flat Washers
Square washers have a larger surface area than round washers for better torque distribution. They are thick with a broad shape to protect against the damage of wood fibers used in wood construction. Square washers also limit sound levels, vibration, and electrical current for use in seismic applications.
Grade 2 Steel
Black Oxide
Square Flat Washers Grade 2 Steel Black Oxide, sorted by For Screw Size, custom
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Zinc Plated
Square Flat Washers Grade 2 Steel Zinc Plated, sorted by For Screw Size, custom
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Galvanized
Square Flat Washers Grade 2 Steel Galvanized, sorted by For Screw Size, custom
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Hot Dipped Galvanized
Square Flat Washers Grade 2 Steel Hot Dipped Galvanized, sorted by For Screw Size, custom
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Grade 2 Stainless Steel
Plain
Square Flat Washers Grade 2 Stainless Steel Plain, sorted by For Screw Size, custom
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Slotted Flat Washers
These "C-shaped" washers can be slipped on and removed from a bolted joint making for easier installation than other flat washers. They are commonly used in construction, fixtures, jigs, work-holding set-ups, and other environments where it would be dangerous or time-consuming to disassemble the existing fastened installation to add a new washer.
Grade 5 Steel
Black Oxide
Slotted Flat Washers Grade 5 Steel Black Oxide, sorted by For Screw Size, custom
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18-8 Stainless Steel
Plain
Slotted Flat Washers 18-8 Stainless Steel Plain, sorted by For Screw Size, custom
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Hygienic Design Flat Washers
Hygienic flat washers are used with narrow shank bolts and screws to secure fasteners against loosening or loss. These stainless steel retaining washers meet requirements for use in hygienic applications.
Stainless Steel
Plain
Hygienic Design Flat Washers Stainless Steel Plain, sorted by For Screw Size, custom
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Washer Assortments
Washer assortments provide a broad range of washer sizes and styles in varying thicknesses. They are commonly used in manufacturing or assembly applications.
Washer Assortments, sorted by Number of Washers Included, ascending
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