Deviation, lower (ISO term) Per ASME B1.7-2006 Definitions [ back to main page ]
Deviation, lower (ISO term): the algebraic difference between the minimum limit of size and the basic size. It is designated “EI” for the internal and “ei” for the external thread. Diameters are from the French term ecart inferieur.
Original Posting: 3/20/2012
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