Fender washers are flat washers that have a larger diameter in proportion to the center hole compared to standard USS or SAE washers. Its oversized outside diameter provides more bearing surface for the load of the fastener. Named for their original use with auto body repair work, fender washers are commonly used in automotive, sheet metal, and electrical applications. Offered in both metric and inch sizes, AFT’s fender washers are available in stainless steel and steel with either a plain or zinc finish.
Fender Washer Resources
Fender Washer Frequently Asked Questions
Q: When should you use a fender washer?
A: Fender washers provide more surface area, which divides the load better. This makes fender washers better to use with soft or thin materials.
Q: What is the difference between a flat washer and a fender washer?
A: The outside diameter of fender washers are much larger in proportion to SAE and USS flat washers.
Q: When should I use stainless steel fender washers?
A: Stainless steel fender washers should be used for outdoor applications or when the washer is exposed to elements that could cause it to rust. Stainless steel provides better corrosion protection compared to plain or zinc plated.