1/4" BSPF HSS Taper Tap Few
Parallel (straight) thread, British Standard Pipe Parallel thread BSP; originally also known as British Standard Pipe Fitting thread/BSPF which have a constant diameter. For producing precision threads by hand tapping, for starting threads - either second or bottoming taps should used after to achieve desire thread depth.
General purpose use
Through & blind holes
Suitable for both hand and machine operations
Threads per inch 19
Drill diameter 11.8mm
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