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CSA B97.1

70th Edition, January 1982

Complete Document

Standard Tolerances for Linear Dimensions, Inch and Metric

Includes all amendments and changes through Reaffirmation Notice , 2002

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Product Details:

  • Revision: 70th Edition, January 1982
  • Published Date: January 2002
  • Status: Not Active, See comments below
  • Document Language: English
  • Published By: CSA Group (CSA)
  • Page Count: 18
  • ANSI Approved: No
  • DoD Adopted: No

Description / Abstract:

This Standard gives tables of standard tolerances for linear dimensions in both inch and metric units, covering a range of sizes up to 200 inches or 5,000 millimetres. Tolerances are provided in a series of grades which cover the full range of precision, from ultra precise products such as gauging elements to coarse tolerances suitable for rough work, and for many types of manufacturing or production processes, including casting and forming as well as cutting operations. Appendix A provides a rough guide of tolerance grades suitable for various manufacturing processes.

Tolerance grades O1 to 16 inclusive, in the ranges up to 20 inches or 500 mm, agree with those specified in IS0 Recommendation R286-1962, IS0 System of Limits and Fits Part I: General, Tolerances, and Deviations. for the same grades.

The formulae from which tolerances have been calculated are given in Appendix B.