• spiral flute tap, spiral point tap, DIN352 tap
  • DIN372 spiral flute tap
  • DIN352 hand tap for professional usage
  • DIN223 UNC-UNF Round Dies
  • DIN223 Round Dies
  • DIN223 BSW Round Dies

What is Taps & Dies?

Taps and dies are tools used to create screw threads, which is called threading. Many are cutting tools, others are forming tools.
A tap is used to cut or form the female portion of the mating pair.
A die is used to cut or form the male portion of the mating pair. The die cuts a thread on a preformed cylindrical rod, which creates a male threaded piece which functions like a bolt.
The process of cutting or forming threads using a tap is called tapping, whereas the process using a die is called threading. Both tools can be used to clean up a thread, which is called chasing.
 

Different kind Taps:

Bottoming tap or Plug tap:The tap has a continuous cutting edge with almost no taper — between 1 and 1.5 threads of taper is typical. 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; the tapered end ("tap chamfer") of a bottoming tap is too short to successfully start into an unthreaded hole. In the US, they are commonly known as bottoming taps, but in Australia and Britain they are also known as plug taps.
Intermediate tap, second tap:The 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. Plug taps are the most commonly used type of tap. In the US, they are commonly known as plug taps, whereas in Australia and Britain they are commonly known as second taps.
Taper tap:The taper tap is similar to an intermediate tap but has a more 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.
The above taps are generally referred to as hand taps, since they are, by design, intended to be manually operated.
The most common type of power driven tap is the "spiral point" plug tap, whose cutting edges are angularly displaced relative to the tap centerline. This feature causes the tap to continuously break the chip and eject it forward into the hole, preventing crowding. Spiral point taps are usually used in holes that go all the way through the material, so that the chips can escape.
Machine tap:Machine tap is faster, and generally more accurate because human error is eliminated. Final tapping is achieved with single tap. Although in general machine tapping is more accurate, tapping operations have traditionally been very tricky to execute due to frequent tap breakage and inconsistent quality of tapping.
 

For more details on Taps & Dies, please check catalogue or contact us.