BS 328-1:1993
Current
The latest, up-to-date edition.
Drills and reamers Specification for twist drills
Hardcopy , PDF
English
15-04-1993
Committees responsible
Foreword
Specification
1. Scope
2. References
3. Definitions
4. Dimensions
5. Features of design
6. Materials and hardness
7. Marking
8. Performance
Annex
A. (normative) Method of test
Tables
1. Parallel shank jobber series twist drills.
Preferred sizes
2. Parallel shank stub series twist drills.
Preferred sizes
3. Parallel shank long series twist drills.
Preferred sizes
4. Parallel shank extra long series twist drills.
Preferred sizes
5. Morse taper shank twist drills. Preferred sizes
6. Morse taper shank extra long twist drills.
Preferred sizes
7. Parallel shank jobber series twist drills.
General sizes
8. Parallel shank stub series twist drills.
General sizes
9. Parallel shank long series twist drills.
General sizes
10. Morse taper shank twist drills. General sizes
11. Limits of tolerance on diameter
12. Flute length l of Morse taper shank extra long
twist drills
13. Limits of tolerance on overall length and flute
length
14. Material - cutting portion only
A.1 Table of penetrations (metric)
A.2 Table of penetrations (imperial)
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