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About This Item

 

Full Description

Provides dimensions, designations, and some general manufacturing requirements for three types of centre drill: Type A, for centre holes without protected chamfer; type B, for centre holes with protected chamfer; and Type R, for centre holes with radius form. It is in exact technical agreement with BS 328: Part 2, as well as ISO 866, 2540 and 2541, but has additional tolerances.
 

Document History

  1. AS 1913-1976

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    Centre drills

    • Most Recent
  2. AS B45.2-1960


    Twist drills and combined drills and countersinks - Combined drills and countersinks (centre drills)

    • Historical Version
  3. AS B45.2-1952


    Twist drills and combined drills and countersinks - Combined drills and countersinks (centre drills)

    • Historical Version
  4. AS B45.2-1932


    Twist drills and combined drills and countersinks, Part 2: Combined drills and countersinks (centre drills)

    • Historical Version