Stainless Steel Standard Fender Washers
What are standard fender washers? Standard fender washers are general fender washers with a wide bearing surface for thin sheet metal, plumbing, and automotive body work. Made from 18-8, 304, and 316 stainless, plus A2 and A4 metric, they resist rust in wet, coastal, and outdoor use.
Why the wide footprint matters on thin material
A standard fender washer's oversized outer diameter spreads the fastener's clamping load across a much larger area than a flat washer, which stops the nut or head from pulling through thin sheet metal, soft wood, plastic, and oversized or slotted holes. This makes them a staple in automotive body, plumbing, and sheet metal work. Match the inner diameter to your bolt and the grade to the environment, with 316 or A4 for coastal and saltwater exposure.
Why choose standard fender washers
- Wide bearing: oversized diameter resists pull-through in thin material.
- Versatile: works on metal, wood, plastic, and slotted holes.
- Grade range: 18-8, 304, 316, and metric A2/A4.
- Corrosion resistance: holds up in wet and outdoor use.
Common applications for standard fender washers
- Thin sheet metal and body panels
- Plumbing and fixture mounting
- Oversized and slotted holes
- Marine and coastal hardware (316 or A4)
For a thicker version that resists bending, browse the extra-thick options and every size on the main fender washers category, or see stainless flat washers for standard load spreading.
Standard Fender Washers FAQ
What grades do standard fender washers come in?
Inch in 18-8, 304, and 316, and metric in A2 and A4. A2 is comparable to 304 and A4 to 316.
How wide is a fender washer compared to a flat washer?
A fender washer has a much larger outer diameter relative to the hole, giving a wider bearing surface to resist pull-through in thin or soft material.
Which grade for coastal use?
Use 316 or metric A4 for coastal and saltwater exposure, since they resist pitting better than 18-8, 304, or A2.