Screwdriver bit difference

[Kevin54]

What is the difference in screwdriver bits that have the designation P2 and PH2? What does the "H" stand for? I'm looking at DeWalt impact bits for a #2 screw.

 

[KnurledNut]

I have wondered this same question for years.
I cant tell any difference.
Could the PH stand for phillips head?
I can say, from experience, i have found the Dewalt impact bits to be fairly soft.

 

[Duck tape Bill]

I think it's the same, just a difference in how companies choose to abbreviate "Phillips." Maybe it has something to do with Pozidriv, but that's usually abbreviated "PZ."

 

[Thumper68]

I have found the Milwalkee bits hold up well, the Dewalt seem to either wear out or break.

If you can get the torx screws much better than the phillips.

 

[TomB19]

I've had good service from Milwaukee Shockwave. DeWalt impact ready bits have stood up a wee bit better, in my use. ... with Bosch being better still. I'd run any of the three.

DeWalt FlexTorq bits are awesome, with the ScrewLock magnet deal. I usually leave the magnet off but when you need it, it's awesome.

Bosch makes phillips bits that have ribs that engage the fastener a little tighter. I'm not a big fan of the ribs, although I don't dislike them. Whatever Bosch is doing, their Phillips bits seem to work well and stand up.

 

[TomB19]

Here are the Bosch ribs I mentioned.

 

[LordPsychon]

Here are the Bosch ribs I mentioned.

Ribbed for Phillip's pleasure? (sorry, could not resist).

Kidding aside, I like this feature because it makes it a lot harder to strip a screw head - keep in mind Phillips are designed to cam out under high torque to prevent overdriving but at least with this form you can generally save the screw.

 

[hautpot]

Those ribbed (ACR) bits are very useful for removal, I don't like it sometimes because the bit actually gets STUCK on the fastener and removes itself from my magnetic holder.

I have been using the Wera's and Zephyr's.

 

[rlitman]

Those ribbed (ACR) bits are very useful for removal, I don't like it sometimes because the bit actually gets STUCK on the fastener and removes itself from my magnetic holder.

I have been using the Wera's and Zephyr's.

ACR ribs are really meant to engage with matching ribs in Philips ACR 2 screws. They don't help that much in plain Philips screws.

 

[JR 42]

Those Bosch ribbed tips were very brittle years ago, I would routinely crack bits driving wood screws into softwoods with a 14 volt NiMH impact driver. With all the impact-specific bits on the market now, it's probably not as much of a problem.

DeWalt's website isn't very useful, and I can't tell the difference between the two part naming schemes.

JR

 

[Exohio1]

What is the difference in screwdriver bits that have the designation P2 and PH2? What does the "H" stand for? I'm looking at DeWalt impact bits for a #2 screw.

These prefixes are typically followed by a number that indicates bit size. For example: PH2 - (Phillips #2) A large Phillips bit. PH0 - (Phillips #0) A medium Phillips bit.

 

[NUTTSGT]

I'll be closing this thread as it was brought back from the dead and the OP is unfortunately, no longer with us.