Fmkehoe
Senior Member
- Location
- Cornwall ny USA
- Occupation
- Inspector
Many panel cover screws for example. I hate them, a phillips / common combo would work fine but somebody wanted people to have another tool to carry around.When where are they used?
A #1 is used for devices, such as Leviton a P&S switches and receptacles.When where are they used?
I just use a #2 square drive screwdriver (Klein makes them) for panel cover screws, breaker screws, etc. Much easier than Phillips IMHO.
It looks like it was made to fit screws that are made to accept multiple bit styles. It's clearly a superimposed square drive and flat drive.
Just wondering if anybody has any thoughts, pro or con, on a CX screwheads and their corresponding screwdriver tips.View attachment 2552066
It seems to me that the hybrid serves at least two goals.It looks like it was made to fit screws that are made to accept multiple bit styles. It's clearly a superimposed square drive and flat drive.
Plus you have more contact area on the driving surfaces than you would have with strictly one style or the other of driving tool which should lessen "cam out" as well.It seems to me that the hybrid serves at least two goals.
1. To accept two different styles of bit. The flat bit is low tech and ubiquitous, the square drive is suited to automated screw placement by machine.
2. To accept single hybrid bit which combines the high torque without cam out that a flat bit offers with the self centering of the square bit to prevent the flat bit from sliding out the end of the slot.
Yes. On the Sq Drive, it was invented in Canada by a Robertson, and that is what is called there. Robertson offered it to Henry Ford, it didn't work out as the engagement was too solid, so he went with phillips as they would "cam out". I have used Sq Dr for 40 years, you can get hurt with a slotted screw when the driver slips out. Lately I have switched to star or torque drive for wood screws, the ones I use have a drill tip and self countersink.Plus you have more contact area on the driving surfaces than you would have with strictly one style or the other of driving tool which should lessen "cam out" as well.