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sklademVydáno: 1972-07-28
BS 328-2:1972
Drills and reamers Combined drills and countersinks (centre drills)
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| Označení normy: | BS 328-2:1972 |
| Počet stran: | 14 |
| Vydáno: | 1972-07-28 |
| ISBN: | 0 580 07015 8 |
| Status: | Standard |
DESCRIPTION
BS 328-2:1972
This standard BS 328-2:1972 Drills and reamers is classified in these ICS categories:
- 25.100.30 Drills, countersinks, reamers
This Part of this British Standard gives designations and dimensions for the following types of centre drills.
- Type A, combined drills and countersinks (centre drills) for centre holes without protecting chamfers.
- Type B, combined drills and countersinks (centre drills) for centre holes with protecting chamfers.
- 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.