ISO 723:1991
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Rock drilling equipment -- Forged collared shanks and corresponding chuck bushings for hollow hexagonal drill steels

This standard has been reviewed* and then confirmed in 2013.

*ISO standards are reviewed every five years.


Specifies the dimensions of both forged collared shanks and corresponding chuck bushings. Values are given for five nominal sizes. This second edition cancels and replaces the first edition (1974), which has been technically revised (extension of the range of sizes and specification of the size of the internal diameter at the forged collar).


  • Edition: 2 (Monolingual) ICS: 73.100.30
    Status: Published Stage: 90.93 (2013-07-08)
    TC/SC: ISO/TC 82 Number of Pages: 3
  • Revises: ISO 723:1974

  • No corrigenda or amendments available

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