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Washers are used to spread the load of a bolt or screw over a larger area or to help prevent loosening under vibration.
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Washers
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General use flat washer
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Stainless steel 18-8
An alloy of steel with high corrosion resistance.
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Brass
Solid brass. An alloy of copper with good corrosion resistance. Used mostly in decorative applications.
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Silicon bronze
Solid bronze. An alloy of copper with greater strength and corrosion resistance than brass.
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USS pattern is the most common type of flat washer.
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Zinc plated steel
A low carbon steel for general use. Zinc plated for moderate corrosion resistance.
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Zinc plated grade 5 steel
A tempered medium carbon steel. Grade 5 falls between grade 2 and grade 8 in strength, and is commonly found in automotive applications. Zinc plated for moderate corrosion resistance.
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Zinc plated grade 8 steel
A tempered medium carbon steel. Grade 8 is stronger than grade 5, and is commonly found in high strength automotive applications. Zinc plated for moderate corrosion resistance.
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Grade 8 steel plain finish
A tempered medium carbon steel. Grade 8 is stronger than grade 5, and is commonly found in high strength automotive applications. Unplated finish.
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Chrome plated grade 2 steel
A low carbon steel for general use. Chrome plated and polished for a mirror like finish.
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Hot dipped galvanized steel
A low carbon steel for general use. Hot dipped galvanized (A153) for very good corrosion resistance.
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SAE pattern is a tighter fit on the bolt and a smaller outside diameter.
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Zinc plated steel
A low carbon steel for general use. Zinc plated for moderate corrosion resistance.
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Zinc plated grade 5 steel
A tempered medium carbon steel. Grade 5 falls between grade 2 and grade 8 in strength, and is commonly found in automotive applications. Zinc plated for moderate corrosion resistance.
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Zinc plated grade 8 steel
A tempered medium carbon steel. Grade 8 is stronger than grade 5, and is commonly found in high strength automotive applications. Zinc plated for moderate corrosion resistance.
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Grade 8 steel plain finish
A tempered medium carbon steel. Grade 8 is stronger than grade 5, and is commonly found in high strength automotive applications. Unplated finish.
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Chrome plated grade 2 steel
A low carbon steel for general use. Chrome plated and polished for a mirror like finish.
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Washers with oversized outside diameters.
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Split lock washers place tension against a nut after tightening, to help prevent loosening.
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Stainless steel 18-8
An alloy of steel with high corrosion resistance.
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Zinc plated steel
A low carbon steel for general use. Zinc plated for moderate corrosion resistance.
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Zinc plated grade 8 steel
A tempered medium carbon steel. Grade 8 is stronger than grade 5, and is commonly found in high strength automotive applications. Zinc plated for moderate corrosion resistance.
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Grade 8 steel plain finish
A tempered medium carbon steel. Grade 8 is stronger than grade 5, and is commonly found in high strength automotive applications. Unplated finish.
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Chrome plated grade 2 steel
A low carbon steel for general use. Chrome plated and polished for a mirror like finish.
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Hot dipped galvanized steel
A low carbon steel for general use. Hot dipped galvanized (A153) for very good corrosion resistance.
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Silicon bronze
Solid bronze. An alloy of copper with greater strength and corrosion resistance than brass.
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A split lock washer designed to fit under the head of a socket cap screw.
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Uses external teeth to help prevent loosening.
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Stainless steel 410
A stainless alloy that is harder than 18-8 stainless steel, but not as resistant to corrosion.
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Zinc plated steel
A low carbon steel for general use. Zinc plated for moderate corrosion resistance.
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Uses internal teeth to help prevent loosening.
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Stainless steel 410
A stainless alloy that is harder than 18-8 stainless steel, but not as resistant to corrosion.
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Zinc plated steel
A low carbon steel for general use. Zinc plated for moderate corrosion resistance.
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Chrome plated grade 8 steel
A tempered medium carbon steel. Grade 8 is stronger than grade 5, and is commonly found in high strength automotive applications. Chrome plated and polished for a mirror like finish.
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Decorative washers for use with oval or flat head screws.
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Stainless steel 18-8
An alloy of steel with high corrosion resistance.
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Nickel plated steel
A low carbon steel for general use. Nickel plated for a decorative finish.
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Brass
Solid brass. An alloy of copper with good corrosion resistance. Used mostly in decorative applications.
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Silicon bronze
Solid bronze. An alloy of copper with greater strength and corrosion resistance than brass.
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Very thick washers with large outside diameters.
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Large square washers that are thicker than standard washers.
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Thick, large diameter, washers with a curved or sculpted appearance.
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A neoprene washer bonded to a metal backing. Used to seal out air/water or dampen noise and vibration.
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See also
Used to spread the load of a bolt or screw over a larger area or to help prevent loosening under vibration.
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