Fair Wind Fasteners
316 Stainless Steel Flat Washers
316 Stainless Steel Flat Washers
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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) |



I am slowly working my way through my boat, replacing OEM “stainless” hardware that has left rust stains. I realize that not all stainless is the same, but am confident that the 316SS fasteners I have purchased from Fair Wind Fasteners will far outperform the OEM hardware. The prices are very fair considering the quality, lightning fast shipping and ease of finding what otherwise would be difficult to find hardware. Very satisfied customer!
These washers are beautifully crafted, very shined, and perfectly shaped. I couldn't ask for anything better!
Great products and great service! Will continue ordering from this business.
These guys are great! Good selection of high quality bronze fasteners, great responsive and reliable service. I’ll be back for more!
316 Stainless Steel Flat Washers
Had what I needed and super easy to get it.
Great for hard to find 316 fasteners!
excellent product, will purchase from this company again.