Wood screws PH1 and PH2 – which ones?

Wood screws Furnica

Wood screws PH1 and PH2 – which ones?

PH is the designation of the screw type with a cross cut in the head. The whole thing has been standardized and patented by the company whose name is used for the abbreviation “PH”: Phillips.

Characteristics of PH screws

Their successors are PZ type screws with a slightly more modern design. Type PH is adapted to pneumatic and automatic tools of older type. In their case, the screw head may have been damaged due to the user not hitting the cross recess.

Therefore, the manufacturer decided to introduce a special solution, the so-called cam-out, which led to the tool head popping out of the cross-centre. Unfortunately, this led to slight damage within the screw itself and also to slightly faster tool wear, but it was the best possible technological solution in the last century, when PH screws were patented.

Although it is possible to use screwdrivers adapted to PZ screws for those in the PH type, it is not recommended. It can lead to damage and warping of both screws and screwdrivers.

Which type of screwdriver should you choose?

As indicated above, regardless of the type selected, these furniture accessories should be used separately. Although in theory PZ screws are much more technologically advanced, nothing stands in the way of using PH type as well.

It is up to the person creating the structure to choose the best possible screws. If, according to her knowledge and experience, PH type screws are fully sufficient (or even better) – they can be used freely, remembering only not to combine types.

What do numbers 1, 2, 3, 4 mean?

In case of PH (as well as PZ) type screws, digits are added to the two-letter mark. This is nothing but a size designation: PH1 is 2-3 mm, PH2 means 3.5-5 mm and so on.

Selection of the appropriate size depends on the dimensions of the structure itself, as well as the needs – among other things in terms of load capacity. Screws should be adjusted accordingly without using either too small or too large models.

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