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BS 1157:1975

Recommendations for tapping drill sizes for use with fluted taps

Standard Details

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.

General Information

Status : Confirmed
Standard Type: Main
Document No: BS 1157:1975
Document Year: 1975
Pages: 28
  • Section Volume:
  • GBM14 Manufacturing Engineering (GMB14)

Life Cycle

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Confirmed
BS 1157:1975

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