GDTP ASME Y14.5M 1.4 Fundamental Rules Questions and Answers 2023

GDTP ASME Y14.5M 1.4 Fundamental Rules Questions and Answers 2023 Fundamental Rules Dimensioning and tolerancing shall clearly define engineering intent and shall conform to the following: 1.4 a) Each dimension shall have a tolerance, except for those dimensions specifically identified as reference, maximum, minimum, or stock (commercial stock size). 1.4 b) Dimensioning and tolerancing shall be complete so there is full understanding of the characteristics of each feature. 1.4 c) Each necessary dimension of an end product shall be shown. No more dimensions than those necessary for complete definition shall be given. 1.4 d) Dimensions shall be selected and arranged to suit the function and mating relationship of a part and shall not be subject to more than one interpretation. 1.4 e) The drawing should define a part without specifying manufacturing methods. 1.4 f) It is permissible to identify as nonmandatory certain processing dimensions that provide for finish allowance, shrink allowance, and other requirements, provided the final dimensions are given on the drawing. Nonmandatory processing dimensions shall be identified by an appropriate note, such as NONMANDATORY (MFG DATA). 1.4 g) Dimensions should be arranged to provide required information for optimum readability. Dimensions should be shown in true profile views and refer to visible outlines. 1.4 h) Wires, cables, sheets, rods, and other materials manufactured to gage or code numbers shall be specified by linear dimensions indicating the diameter or thickness. Gage or code numbers may be shown in parentheses following the dimension. 1.4 i) A 90 degree angle applies where center lines and lines depicting features are shown on a drawing at right angles and no angle is specified. 1.4 j) A 90 degree basic angle applies where center lines of features in a pattern or surfaces shown at right angles on the drawing are located or defined by basic dimensions and no angle is specified. 1.4 k) Unless otherwise specified, all dimensions are applicable at 20 degrees Celsius (68 degrees Farenheit). Compensation may be made for measurements made at other temperatures.