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Gages

USCTI Table 301B - Standard System of Marking

General As a minimum , taps will be marked with the threads per inch or pitch, the proper product thread designation indentfying their thread form from letters designating the type of material they are made from (example, HS indicating high speed steel) The country of origin if other of U.S.A, will be marked in accordance with customs regulations CFR 19, part 134.

Gages