(30 pc) Custom EXTSW 12.54 mm ID x 37.84 mm OD x 4 mm Thick 316 SS Washers

(20 pc) EXTSW 12.54 mm ID x 37.84 mm OD x 4 mm thick 316 Alloy Stainless Washers (+/-.076mm on all dimensions) 20 pieces@$6.40US each

(10 pc) EXTSW 10.16 mm ID x 31.5 mm OD x 3.2 mm thick 316 Alloy Stainless Washers (+/-.076mm on all dimensions) 10 pieces@$5.20US each.

Make sure the sizes and tolerances will work for you.

Custom prices and orders are not returnable.

Actual size .494” ID x 1.490” OD x .500” thick

(+/- .003 on all dimensions)

Made in USA on a CNC lathe

It is a beautiful fit for your 12 mm and 10 mm Stainless bolts or shafts

We can make as many as you need, just contact me.


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.