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BSI - BS 1157

Recommendations for Tapping Drill Sizes for Use with Fluted Taps

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Organization: BSI
Publication Date: 30 September 1975
Status: active
Page Count: 28
ICS Code (Drills, countersinks, reamers): 25.100.30
scope:

Sizes for ISO internal metric threads to BS 3643 (Parts 1, 2 and 3) and for internal threads to BS 21, 84, 93, 1580 (Parts 1, 2 and 3) and 2779. Alternative sizes in appendix.

Document History

BS 1157
September 30, 1975
Recommendations for Tapping Drill Sizes for Use with Fluted Taps
Sizes for ISO internal metric threads to BS 3643 (Parts 1, 2 and 3) and for internal threads to BS 21, 84, 93, 1580 (Parts 1, 2 and 3) and 2779. Alternative sizes in appendix.

References

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