Tool Stuff, That I Was NEVER Taught, EVEN After 70 YEARS!!

[Jstpssng]

Now I've learned two things this month about tools. The first is that 1/2" and 13mm really aren't the same thing. (1/2" is 12.7mm)
I never really thought about it before, the cheap socket sets I got as a kid used them as the same. A couple of weeks ago I attempted to use a 1/2" socket to pull the bar on my Echo and rounded the corners of the nuts... skinning my knuckles in the process.
I then used a 13 mm which spun them right off. The latter fits completely over the tapered nut whereas the first didn't slide on all of the way.

 

[jigs_n_fixtures]

PZ drive works much better and should not be particularly more expensive, a screw design that handles torque so badly as Phillips is pure junk and thankful it's almost dead for all serious use.

The Phillips is wonderful at doing exactly what it was designed to do: Cam out under load. Phillips designed it to be driven with an unclutched power driver, and cam out before it could exert enough torque to snap, or tear out the sheet metal. It does that really well.

 

[Agvg]

The Phillips is wonderful at doing exactly what it was designed to do: Cam out under load. Phillips designed it to be driven with an unclutched power driver, and cam out before it could exert enough torque to snap, or tear out the sheet metal. It does that really well.

A myth to cover a bad design, it was not in the patent application, destroying the screw as a feature is not good.

 

[KennyG]

Just because it wasn't in the patent, doesn't mean it isn't used for that reason. Also just because it isn't perfect doesn't mean it's not useful.

 

[CADplans]

Just because it wasn't in the patent, doesn't mean it isn't used for that reason. Also just because it isn't perfect doesn't mean it's not useful.

If "it isn't perfect" was a reason to get rid of something,,
my wife would have got rid of me close to a half century ago,,

 

[Agvg]

Just because it wasn't in the patent, doesn't mean it isn't used for that reason. Also just because it isn't perfect doesn't mean it's not useful.

Phillips have no reason to exist in any new products in 2021.

 

[CADplans]

Now I've learned two things this month about tools. The first is that 1/2" and 13mm really aren't the same thing. (1/2" is 12.7mm)

Ahhh,, yes,, BUT,, 19mm and 3/4" sockets are perfectly identical, (within 0.05") and interchangeable,,
Why they never stamped both sizes on that socket always amazed me,,

 

[ruffdog]

Also, 5/16 and 8mm is very close.

 

[Agvg]

11mm is 7/16, 27mm is 1 1/16, suppose that's why it's used on wheel nuts on old MFs.

 

[KennyG]

Phillips have no reason to exist in any new products in 2021.

Everyone in the world has Phillips screwdrivers. A limited number have other options.