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BS 328-1:1986

Withdrawn Date published:

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Drills and reamers, Specification for twist drills

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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    Specification for bit braces

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BS 328-1:1986

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