Now if they were part of a Dept. of Defense project, they would have been issued a 30+ alphanumeric part number with the description "Shim, alignment, horizontal, critical, fiber, cellulose, recycled, disposable" and cost several hundred $$$ each. Of course they would be lot numbered and had to have gone thru several levels of testing/certification and shipped in heat, light, moisture, and radiation proof containers of not less than 10,000 pieces!