What is the difference between PH and PZ?

PZ recesses carry extra tick marks and the tip sits squarer, which reduces cam-out. Using a PH tip in a PZ screw rounds the recess.

Why is Torx preferred?

Its contact area is wide and the tip is not pushed out of the recess, so it transfers high torque with the lowest risk of cam-out.

Which screwdriver for an electrical panel?

Only VDE-marked models, individually tested for 1,000 V. A plastic handle by itself is not enough.

Why does my screwdriver tip wear so fast?

Usually the wrong type or the wrong size. If the tip does not seat fully, the load concentrates on the corners and wears both tip and screw.

What is an impact driver used for?

Struck on the end of the handle, it applies turning and downward force together — for seized screws and recesses that have started to round.

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Screwdrivers

The tip geometry decides everything with a screwdriver: the wrong tip rounds a recess in seconds. The range here covers slotted, Phillips and Pozidriv, Torx and VDE insulated models.

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Tip types: PH, PZ, Torx and slotted

Phillips (PH) and Pozidriv (PZ) look alike but are not: PZ recesses carry extra tick marks and the tip sits squarer in the recess, which reduces cam-out. A PH tip in a PZ screw rounds the recess.

Torx (TX) is a six-lobe recess rather than a cross; its wide contact area transfers high torque with the least cam-out of any type. Slotted tips are chosen by size — blade width by thickness.

S2 steel and VDE insulation

S2 is the standard steel for screwdriver tips: hard enough to transfer torque without rounding the recess. For electrical work, look for the VDE mark — individual testing for live work up to 1,000 V.

Frequently Asked Questions

What is the difference between PH and PZ?
PZ recesses carry extra tick marks and the tip sits squarer, which reduces cam-out. Using a PH tip in a PZ screw rounds the recess.
Why is Torx preferred?
Its contact area is wide and the tip is not pushed out of the recess, so it transfers high torque with the lowest risk of cam-out.
Which screwdriver for an electrical panel?
Only VDE-marked models, individually tested for 1,000 V. A plastic handle by itself is not enough.
Why does my screwdriver tip wear so fast?
Usually the wrong type or the wrong size. If the tip does not seat fully, the load concentrates on the corners and wears both tip and screw.
What is an impact driver used for?
Struck on the end of the handle, it applies turning and downward force together — for seized screws and recesses that have started to round.