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About This Item

 

Full Description

Covers drill sizes recommended for use when tapping certain sizes of the following types of screw threads: B.S. 84; B.S. 93; B.S. 1095; a.S.A. B1.1-1949; & B.S. 1580-1953.
 

Document History

  1. AS B97-1956

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    Tapping drill sizes

    • Most Recent
  2. AS B97-1946


    Specification for tapping drill sizes

    • Historical Version