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Prod. # Size Each price Bag price Bulk price Price Buy
15021 1/4" $0.08 / ea $5.66 / 100 $51.00 / 1,000 $0.08 / ea $5.66 / 100 $51.00 / 1,000
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USS flat washer dimensions
Product details
Bolt Depot product# 15021
Units US
Category Washers
Used to spread the load of a bolt or screw over a larger area or to help prevent loosening under vibration.
Subcategory USS flat washers
USS pattern is the most common type of flat washer.
Material Steel
A tempered medium carbon steel.
Plating Zinc
Zinc plated for moderate corrosion resistance.
Grade Grade 5
Grade 5 falls between grade 2 and grade 8 in strength, and is commonly found in automotive applications.
Size 1/4"
Outside diameter 47/64" (Min 0.727", Max 0.749")
Inside diameter 5/16" (Min 0.307", Max 0.327")
Thickness 0.051" - 0.080"
Dimensional standard ASME B18.21.1

Additional information