316 Stainless Steel Flat Washer
316SS Flat Washer - Small Washer
Stainless Steel A4 Washers
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316 Stainless Steel Flat Washers

Part Number: SS-FW-6

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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)

Customer Reviews

Based on 11 reviews
Charles Haupt
Inventory and Service

Had what I needed and super easy to get it.


Great for hard to find 316 fasteners!

Huck Runnion
stainless steel washers

excellent product, will purchase from this company again.

Weston Lake
Boat hardware

Right stuff came on time

Andrew S
What I was looking for

Installed a ladder on my dock and these washers (and lag screws) were just what I was looking for for longevity! Very pleased with the product!