Drill Nomenclature and Geometry - NEMES
2005-5-6 · Drill NomenclatureDrill Nomenclature. •Margins: “The cylindrical portion of the land that is not cut away to provide clearance”. –The balance of the land is reduced in diameter, known as “cleared diameter” or “body clearance”. –Body clearance prevents excessive rubbing and friction. MarginsMargins.
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