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Extsw 20 mm ID x 38 mm OD x 4.7 mm thick 316 Stainless Washer / FREE SHIPPING

Extsw 20 mm ID x 38 mm OD x 4.7 mm thick 316 Stainless Washer / FREE SHIPPING


(1 pc) extsw 21.05 mm ID x 38 mm OD x 4.77 mm thick 316 / A4 Alloy Stainless Washer

0.7mm Radius OD / Countersunk ID (no sharp edges)

  21 mm ID x 37.84 mm OD x 4.77 mm Thick (+/- .076mm on all dimensions)
 .828inch        1.490inch          .188inch          (+/- .003 on all dimensions)
 Made in USA on a CNC lathe

It is a beautiful fit for your 20mm Stainless bolts


(Some other website will charge more for shipping than the washer cost)

USPS First Class Mail (2-9) business day delivery, depending on location.
(Usually delivered in 2-5 days)

All orders over $40.00 get FREE (2-3) Day Priority Mail

USPS (2-3) Day Priority Mail for $4.95 (unlimited weight)

Just contact me if you need a custom size washer.


316 Grade Alloy Stainless contain a higher percentage of nickel than 304SS. The resultant composition gives a much improved corrosion resistance in many aggressive environments. The molybdenum addition ensures more resistance to pitting and crevice corrosion in chloride-containing media, sea water and chemical environments such as sulfuric acid compounds, phosphoric and acetic acids. The lower rate of general corrosion in mildly corrosive environments gives 316 SS a good atmospheric corrosion resistance in polluted marine atmospheres.

316 SS offers good strength and creep resistance and also possesses excellent mechanical and corrosion-resistant properties at sub-zero temperatures.

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