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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.
The most common stainless steel for general hardware use.
A low carbon steel for general use. Zinc plated for moderate corrosion resistance.
A tempered medium carbon steel. Class 10.9 is stronger than class 8.8, and is commonly found in high strength automotive applications. Class 10.9 is similar to grade 8. Zinc plated for moderate corrosion resistance.
A low carbon steel for general use. Chrome plated and polished for a mirror like finish.
A general purpose nylon often used in fasteners for corrosion resistance.
A very high strength heat treated alloy steel. Black oil (plain) finish.
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