Post-1964 Dimes

What are official weight and dimension specifications for U.S. silver dimes (pre‑1965) and how much variation is acceptable?

(commonly called “90% silver” dimes) were specified by the to be struck in a 90% silver / 10% copper alloy, with a standard total weight of 2.50 grams and a diameter of 17.9 millimeters (0.705 inch) —...