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BS 328-2:1972

BS 328-2:1972

$86.31

Drills and reamers – Combined drills and countersinks (centre drills)

Published By Publication Date Number of Pages
BSI 1972 14
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This Part of this British Standard gives designations and dimensions for the following types of centre drills.

  1. Type A, combined drills and countersinks (centre drills) for centre holes without protecting chamfers.
  2. Type B, combined drills and countersinks (centre drills) for centre holes with protecting chamfers.
  3. Type R, combined drills and countersinks (centre drills) for centre holes with radius form.

Appendix A, Appendix B and Appendix C show the recommended dimensions for centre holes.

Designations and dimensions of combined drills and countersinks (centre drills) for centre holes, without protecting chamfers, with protecting chamfers or of radius form.

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BS 328-2:1972
$86.31