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BS 1157

75th Edition, September 30, 1975

Complete Document

Recommendations for Tapping Drill Sizes for Use with Fluted Taps

Includes all amendments and changes through Reaffirmation Notice , January 1, 2012


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Product Details:

  • Revision: 75th Edition, September 30, 1975
  • Published Date: January 1, 2012
  • Status: Active, Most Current
  • Document Language: English
  • Published By: British Standards Institution (BSI)
  • Page Count: 28
  • ANSI Approved: No
  • DoD Adopted: No

Description / Abstract:

Sizes for ISO internal metric threads to BS 3643 (Parts 1, 2 and 3) and for internal threads to BS 21, 84, 93, 1580 (Parts 1, 2 and 3) and 2779. Alternative sizes in appendix.