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HSS Hand and Machine Taps
HSS Tap Set BSPF-2-1/4x11
Tools & Gear Taps & Dies HSS Hand and Machine Taps
BSPF (G SERIES)BRITISH STANDARD PIPE BSPF (G SERIES) This series is a pipe thread which is used mainly for mechanical coupling. The angle of thread is mainly 55 deg; however for the US method some threads have a 60 deg; angle. It is specified according to JIS and ISO R228. TAPER TAPS have a lead of eight threads and are used as a starting tap in difficult or high precision holes. INTERMEDIATE TAPS have a lead of four threads and are used in most general purpose applications to cut a thread true to a pre-drilled pilot hole. BOTTOMING TAPS have a lead of two threads and are used to ensure minimum thread run-out when tapping to the bottom of a blind hole. Bottoming Taps are typically preceded by the use of a Taper or Intermediate Tap. Manufactured from HSS this general purpose tap is designed for use in medium tensile materials and is for hand or general machine use.
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HSS Tap Set BSPF-2-1/4x11