Transcription of NADCA Engineering and Design: Coordinate …
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NADCA Engineering and Design: Coordinate …
Engineering and design : Coordinate DimensioningNADCA Product Specification Standards for Die Castings / Section 4A / 20034A-6 The values shown repre-sent Standard Tolerances, or normal casting produc-tion practice at the most economical level. For greater casting accuracy see Precision Tolerances for this characteristic on the facing page. See Section 7, Quality Assurance for more toler-ance precision numbers indicate the degree of accuracy in calculating precision. The more significant numbers in a specified tolerance, the greater the accuracy. Signifi-cant number is the first non-zero number to the right of the decimal and all numbers to the right of that number. For example, The degree of accuracy is speci-fied by the three significant numbers 140. This is not to be confused with tolerance precision. A tolerance limit of has a higher degree of precision because it is closer to zero tolerance. Zero tolerance indicates that the part meets design specifications Standard and Linear Precision tolerances are expressed in thousandths of an inch (.)
Engineering and Design: Coordinate Dimensioning 4A-6 NADCA Product Specification Standards for Die Castings / Section 4A / 2003 The values shown repre-sent Standard Tolerances, or normal casting produc-tion practice at the most
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