Why You Should be Using Forming Taps

  • Have you ever had to remove chips from a blind hole after tapping it?
  • Have you ever needed a stronger tapped part?
  • Have you ever wanted to cut the production cost of a tapping operation?

Use a forming tap and eliminate all of these issues!

Form taps are ideal for tapping blind holes, but can be used for any tapping application in ductile material, including steel and some stainless steels. Because they have lubrication grooves but no cutting faces, they do not cut threads or produce chips, eliminating chip congesting in the flutes.

This style tap is suitable for lathes, radial drills, machining centers and tapping heads. To increase production, they can be run up to twice as fast as conventional cutting taps.  Because the forming process pushes the material into the thread form, it is stronger than removing material as in the cutting action of a tap. With no cutting edges to dull, it’s not uncommon to get 5 to 10 times the number of tapped holes with forming taps, compared to a comparable cutting tap.

When the material is conducive to metal forming, why doesn’t everyone make the switch?

There are conditions which are critical to successful form tapping.  To produce a certain percentage of thread, the hole size must be larger and more closely controlled.  A hole that is too big will result in an incomplete thread form; and, a hole that’s too small most likely will result in tap breakage.  

Lubrication is strongly recommended, particularly in production tapping, to reduce wear.  More torque is required to drive a forming tap; this isn’t usually an issue until you are tapping larger diameters and coarse pitches. Most tap manufacturers provide tap drill charts specifically for form taps.

Gaging of an internally threaded part is identical to those produced with a cutting tap.

Coatings can significantly add to the life of form taps, and Titanium Carbo Nitride has good wear resistant qualities.

Regal Cutting Tools has a broad offering of MetFlo forming taps in imperial and metric sizes. Contact us today to speak to one of our experts about how these taps can benefit your operation! 

Stay tuned for an extensive offering of NEW SuperTuf high performance taps coming in the new year!