Avoid rust streaking down the side of your project and staining all that it comes in to contact with by opting for these passivated 316 stainless steel flat washers instead of the more commonly available 18-8, 304, or A2 Stainless Steels.
While most retailers won't even carry this more corrosion resistant grade of stainless, it's all we'll sell because we wouldn't use anything lesser ourselves when it comes to fasteners in a corrosive environment. We also like to set ourselves apart by allowing you to purchase these as you need them, and not be held to buying an entire box when only a few will do.
316 (A4) Stainless Flat Washer Dimensions:
| Size | Inner Diameter | Outer Diameter | Thickness |
| 6 | 0.15" (3.8mm) |
0.37" (9.4mm) | 0.02" (0.6mm) |
| 8 | 0.17" (4.3mm) |
0.37" (9.4mm) | 0.02" (0.5mm) |
| 10 | 0.20" (5.1mm) | 0.37" (9.5mm) | 0.05" (1.2mm) |
| 1/4" | 0.28" (7.1mm) |
0.62" (15.7mm) |
0.05" (1.3mm) |
| 5/16" | 0.34" (8.6mm) |
0.75" (19.0mm) | 0.05" (1.3mm) |
| 3/8" | 0.41" (10.4mm) |
0.875" (22.2mm) | 0.05" (1.3mm) |
| 1/2" | 0.56" (12.7mm) | 1.25" (31.7mm) | 0.06" (1.5mm) |
| 5/8" | 0.70" (17.7mm) | 1.50" (38.1mm) | 0.06" (1.5mm) |