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BS 328-1:1986
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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Drills and reamers Specification for twist drills
Hardcopy , PDF
15-04-1993
English
31-03-1986
Dimensions and tolerances for parallel shank, jobber, stub, long and extra long series of twist drills. Also for Morse taper shank and Morse taper shank extra long drills. Tables summarise both imperial and metric sizes for each type of drill.
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