How to choose metric thread tap and metric tap for best results?

By Frank Xu    24 / Dec / 2016    In Category Industrial


Did you know that taps and thread taps are two types of industrial tools that have quite different functions but are available in a pair? Yes! Though these tools are different, yet the area of requirement for metric tap and metric thread taps remain quite the same. These tools are specifically used for making screw threads where, tap is used for cutting the nut, and thread taps help in repairing.

Widely used for re-threading, on-site repairs, and creating shafts as and when required, these taps are made from high-speed steel or alloy as they are called HSS, and have extremely hard cutting edges.

Understanding the usage of taps and thread taps:

With the primary function of creating threads on nuts, the tap is mainly used in regards to making holes in the nut, and it is to be held in perfect square format to its surface. It has to be turned in a clockwise and anti-clockwise manner, only after which a proper thread can be created.

There are times when the taps may get twisted, and in such a scenario, metric thread tap can help in repairing machinery where metric threads are specified. Thus, on the whole, it can be stated that measurements, in this case, is to be understood and taken in a careful manner.

Factors to check while using a metric thread tap:

In case you have to use these tools, there are certain factors that need to be understood before making correct usage of the thread taps. The first factor that has to be taken into consideration is figuring out of threads per inch (TPI) of that part that needs repairing. Only after that, thread engagement can be done based on two factors.

• The length of thread engagement:

It is that distance where a bolt extends into threaded hole. Since it refers to the axial distance of internal to external hole, hence chamfers, corner breaks and unformed threads do not fall into that category.

So, while choosing thread taps, one needs to be careful to leave these unformed ones out.

• Percentage of thread engagement:

Depending specifically on the drill size that is used for drilling that hole, it refers to the cross-sectional amount of thread that is available within a tapped hole. The sharpness of this object needs to be maintained to ensure having less percentage of thread engagement.

However, a major issue that arises with metric thread tap is calculation of required length of thread engagement, since certain old equipment has old denominations.

Tips to get ideal metric tap:

So you are planning to shop around for these tools? When it comes to taps, certain aspects need to be remembered. They are:

a. Since, there are three types of taps available such as taper taps, plug taps and bottoming taps, it is important for you to check out which is the exact one that you need and specifically for what purpose.

b. Plug taps have a sense of versatility in them, courtesy to their cutting edges. Hence, they can surely be chosen.

C. Since this set is used for repairing damaged screws, hence knowing details of the contents and checking its measurements are of utmost importance.

Make sure that when you are getting metric tap, you consult reputed manufacturers online who would provide you with authentic tools as per your requirements.