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ISO 3291:1995

Withdrawn Date published:

Warning: Withdrawn Standard. This document has been replaced by:

Extra-long Morse taper shank twist drills

Gives the dimensions and a list of the preferred diameters of extra-long Morse taper shank twist drills in the range 6 mm to 50 mm with an overall length range of 200 mm to 630 mm.

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Related Information

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  • BS 1157:1975

    Recommendations for tapping drill sizes for use with fluted taps

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  • BS 1937:1953

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  • BS 1978:1965

    Specification for bit braces

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ISO 3291:1995

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