British Standard Fine (BSF) is a screw thread form from the Whitworth family and was commonly was used for steel bolts and nuts on much British machinery prior to metric standards.
All BSF (British Standard Fine) hand taps from Presto are available in sets or as individual taps (first/taper, second, plug/bottom hand taps). BSF Hand taps are generally used for maintenance, in fabrication shops, hobbyists or for small batch one off jobs.Hand taps are all straight fluted and can be used as machine taps if required.
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