.030 inch Radius OD / Countersunk ID (no sharp edges)
Actual size .318 ID x .740 OD x .500 Thick
(+/-.003 all dimensions)
Made in USA on a CNC lathe
It is a beautiful fit for your 5/16” Stainless bolts
(Some other website will charge more for shipping than the washer cost)
USPS First Class Package (2-9 business days depending on location)
Usually is delivered in 2 to 5 days
FREE (2-3) Day Priority Mail for orders over $40.00 (no weight limit)
USPS (2-3) Priority Mail for $4.95 (no weight limit)
USPS Next Day Air for $19.95 (no weight limit)
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.