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BS 1157:1975
BS 1157:1975 Recommendations for tapping drill sizes for use with fluted taps
standard by BSI Group, 09/30/1975
Reduced price!
M00016456
New product
Full Description
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.Cross References:
BS 21
BS 84
BS 93
BS 328:Part 1
BS 1580:Parts 1
