I am seeking a source for washers with the following specs.

Flat - not Belleville, cupped, curved, etc.

Stainless Steel or blue spring steel

I.D.: Both 3/8" and 1/2"

O.D.: Would like the following O.D. dimensions with both the 3/8" and 1/2"
I.D..... .750", .900", 1.050", 1.200", 1.350" (O.D dimensions not
absolutely critical but should be somewhere near.)

Thickness: ranging from .002" to .025" in each size.

Google searches have only resulted in Belleville-type spring washers. I
need flat washers with which to build shim stacks.

I can buy each one of these washers through the dealer at $1 - to - $2
each!

I would like to find a source where I can buy boxes of 25, 50, or 100 for a
few cents per washer.

I am open to any creative alternatives........