Fishinfool
Member
I don't need the Government knowing what type of screwdrivers I have, or how long they are, or how many boxes of screws I have stashed away....
Larry
Larry
I used to have some but there was this terrible boating accident........
Therein lies the strength of the Phillips driver, and also its weakness. because of its intended use in automated equipment, it is designed to back out of the screw head when the torque becomes too high. This is particularly problematic when working on japanese motorcycles, which often have fasteners seemingly made of compressed oatmeal. Phillips will tend to cam out and will often strip out the screw head.
One answer is to use JIS (japanese Industry Standard) bits. The sides of the crossed heads are parallel rather than angled, and they will not tend to back out. Pozidriv bits are constructed similarly. Both bits will loosen screws (even Phillips screws) that a Phillips screwdriver would probably strip.
JIS (also called JASO) screwdrivers are hard to find, and even harder to keep separate from your Phillips screwdrivers once you have found some. Pozidriv bits (for any screwdriver that takes Apex bits) are not everywhere, but can usually be had at a good Ace Hardware or an industrial supply house like Grainger. Of course, Phillips screwdrivers and bits are everywhere, and I have more of them that any other type of screwdriver.
SAE and metric!Does anyone here own a phillips screwdriver?
ME!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!OK.. tell the truth.
How many of you have tried to remove a phillips head screw with a straight slot screwdriver because you didn't have the phillips screwdriver at the time?
The bits that come with Snap-On screwdrivers will often have serrations milled into the bearing faces of the tip, which grip the screw and help keep the tip from camming out. A little valve-grinding paste on the tip can have the same effect.