1/4" BSPT HSS Tap
Taper thread, British Standard Pipe Taper thread (BSPT), whose diameter increases or decreases along the length of the thread.
For producing precision threads by hand tapping, for starting threads - either second or bottoming taps should used after to achieve desire thread depth.
Taper pipe reamer recommended prior to tapping Rc (BSPT) thread forms
General purpose use
Threads per inch 19
Overall length 67mm
Cutting length 19mm
Drill diameter 11.2mm