By American Society of Mechanical Engineers (ASME)
This average establishes uniform practices for mentioning and studying dimensioning, tolerancing, and similar standards to be used on engineering drawings and in comparable files. Practices targeted to architectural and civil engineering, land, welding symbology aren't incorporated.
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Extra info for ASME Y14 5M- Dimensioning and Tolerancing
L-52 through l-56. 5 Fjesetitive Features or Dimensions. features or dimensionsmay be specified by 20 Copyright ASME International Provided by IHS under license with ASME Document provided by IHS Licensee=Visteon/5939448001, 02/04/2005 01:00:31 MST Questions or comments about this message: please call the Document Policy Group at 303-397-2295. 9 FIG. 9 FIG. 9 FIG. 1-54 ’ REPETITIVE FEATURES AND DIMENSIONS FIG. 2 Spacing. Equal spacingof features in a series or pattern may be specified by giving the required number of spacesand an X, followed by the applicable dimension.
14 FLAT TAPERS Conical taper is defined as the ratio of the difference in the diametersof two sections(perpendicular to the axis) of a cone to the distancebetween these sections. Thus, taper = (D - q/L. A flat taper may be specifiedby a tolerancedslope and a toleranced height at one end. See Fig. 2-17. Slopemay be specifiedas the inclination of a surface expressedas a ratio of the difference in the heights at each end (above and at right anglesto a base line) to the distancebetween those heights.
The total permissiblevariation in position is maximum when the feature is at MMC. Likewise, referencing a datum feature’on an LMC basismeans the datum is the axis or center plane of the feature at the LMC limit. Where the actualmating size of the datum feature has departedfrom LMC, a deviation is allowed between its axis or center plane and the axis or center plane of the datum. NOTE: Circularrunout,total runout,concentricity,and symmetry are applicable only on an RFJSbasis and cannot be modified to MMC or LMC.