Prevent stripped screw heads
If a screw bit is not seated properly in the grooves of the screw head, you end up with stripped screws that are almost impossible to remove.
Tight fit
To prevent a stripped screw head always ensure that the screw bit is firmly seated in the grooves of the screw head. If not seated properly, the screw bit freely spins in the top of the screw head and wears away the grooves.
Right fit
There is a lot of confusion when it comes to screws and screw bits. There are so many different types of screw bits because there are so many different types of screws. The most common screw head today is a Pozidriv screw. It looks similar to the Phillips screw head but has additional markings that make it look like a star.
Phillips screw head
As the speed of power drills increased, so did the need for a screw that was better designed than the flathead. Where previously the bit easily slipped out of the screw head, the Phillips screw head provided a way to prevent this from happening.
Pozidriv screw head
As the speed of power drills increased, the need for an even better screw head was required. Modifications were made to the grooves cut in a Phillips screw head and the Pozidriv design was introduced. The majority of screws currently on the market have a Pozidriv design.
PH = Phillips | PZ = Pozidriv
Both PH and PZ screw bits are numbered from 0 to 3 and it is this numbering that indicates the size.
PZ0 = very small screw head | PZ3 = very large screw head.
Make sure that you use the correct screw bit and the correct size for the screws that you are using.
How to remove a stripped screw
If you have a stripped screw, this is where owning a Dremel Multitool comes in so handy. Use a cutting disk to cut a slot into the stripped screw head.
Now you can easily remove the stripped screw with a flathead screwdriver.