What is the difference between the most popular slots PH and PZ

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In short, the PZ profile has additional edges in quarters (identical notches are located on the heads of the screws or screws). But for slots with a PH profile, there are no additional faces.

And this is the main feature that distinguishes the most popular slots PH and PZ. If you want to learn more about the distinctive features of these 2 types of slots, then read the article further.

Slot PH: Profile Features

The PH profile looks like a simple cross, narrowed closer to the base. However, there are some salient features.

For example, the groove is made at an angle of 55 degrees, and the side surface of each face is slightly inclined.

What does this give in practice? If you accidentally pull a self-tapping screw with a PH profile, then the bit head for a screwdriver or Phillips screwdriver will simply pop out of the recess in the self-tapping head, as a result of which the fasteners will not deteriorate.

Slot PZ: profile features

The main distinguishing feature of this type of profile is the presence of additional faces in quarters. This makes it possible to better center the "sting" of the bit or screwdriver.

It is also worth noting that the edges of the working surface are parallel to each other, and the sharpening angle in this case is 50 degrees.

This profile feature makes it possible not only to deepen the slot, but also to increase the tightening torque of the self-tapping screw or screw.

In detail about how the most popular PH and PZ slots differ, we recommend that you look in the video on our website.

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