The increased outer diameter of a fender washer will more evenly spread the load on the surface being bolted or otherwise fastened.
Our fender washers are a passivated 316 Stainless Steel Alloy, unlike the 18-8 or 304SS alloys that are more commonly found, and will hold up better in a corrosive marine environment. They are stamped on one side with "316" as seen in the photos, and the opposite side is blank and can be polished to a mirror finish if you desire.
Fender Washer Dimensions
| Size | Inner Diameter | Outer Diameter | Thickness |
| 6 | 0.15" (3.8mm) |
0.75" (19.0mm) | 0.02" (0.5mm) |
| 8 | 0.17" (4.3mm) |
0.75" (19.0mm) | 0.02" (1.3mm) |
| 10 | 0.21" (5.3mm) | 1.0" (25.4mm) | 0.05" (1.3mm) |
| 1/4" | 0.28" (7.1mm) |
1.0" (25.4mm) |
0.05" (1.3mm) |
| 5/16" | 0.34" (8.6mm) |
1.5" (38.1mm) | 0.05" (1.3mm) |
| 3/8" | 0.41" (10.4mm) |
1.5" (38.1mm) | 0.05" (1.3mm) |
| 1/2" | 0.56" (12.7mm) | 2.0" (50.8mm) | 0.06" (1.5mm) |