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    The Broadway Queens Road Watford WD17 2LD United Kingdom.  Tel: 01923 - 226052  Fax: 08721 - 150160  Email: sales@simbles.com

     

     

    Simbles of Watford

    The one stop tool shop
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    These British manufactured High Speed Steel Ground Thread, threading taps are available in either; First Taper (1st), Second Taper (2nd) or Plug/Cleaning. 
    
    Please make your size selection from the drop down menu and make the type of tap you require.
    
    

    N.P.T. High Speed Steel Taps (1"- 2")

    Please Choose Thread Size
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    Type of Tap (Teeth Form)
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    • Tap Types: First Taper (or Taper Tap) A Taper Tap has a pronounced taper to the cutting edges. This feature gives the taper tap a very gradual cutting action that is less aggressive than that of the plug tap. The number of tapered threads typically ranges from 8 to 10. A taper tap is most often used when the material to be tapped is difficult to work (e.g., alloy steel) or the tap is of a very small diameter and thus prone to breakage. Second Taper (or Intermediate Taper) A Second Taper tap has tapered cutting edges, which assist in aligning and starting the tap into an untapped hole. The number of tapered threads typically ranges from 3 to 5 and is the most common type of threading tap used. Plug/Cleaning Tap (or Bottom Tap) A Plug tap has a continuous cutting edge with almost no taper — between 1 and 1.5 threads of taper. This feature enables a bottoming tap to cut threads to the bottom of a blind hole. A bottoming tap is usually used to cut threads in a hole that has already been partially threaded using one of the more tapered types of tap or for cleaning out dirty threads; the tapered end of a plug tap is too short to successfully start and cut new threads in an unthreaded hole.