Pozidrive screw drive and strange wrench

[Andrew Pitonyak]

I was given a Wera Screwdriver that says PZ2 on it. I assume that this is meant for a Pozidrive screw head (I did a bit of research, but I am still confused). The guy who gave it to me told me that it was just a regular Phillips screw driver and that the extra parts sticking out just helped it grab a regular Phillips screw head better. At this point I am think that he is wrong and that I should use this screw driver (and some other bits) only with Pozidrive screw heads. Please enlighten me.

Same guy also gave me a double sided wrench (10mm / 13mm) and it is a bit confusing (not able to upload a picture at the moment).

On one side of the wrench there is a replaceable part shaped as normal for a wrench that has some teeth to grip well. If you roll the wrench over, the other side has a bunch of dimples that look like it is designed for an oddly shaped bolt head.

Here is a link to a version that has a ratchet on one end. Mine has no ratchet, just two different sizes.

http://www-us.wera.de/catalog_us.html?L=1&file=/en-US/root_category_combination_ratchet_wrenches.html

Perhaps I should understand based on this description (I added comments in red):



unique holding function, thanks to the metal plate in the jaw, reduces the risk of dropping nuts and bolts; replaceable metal plate in the jaw secures nuts and bolts with its extra hard teeth and reduces the danger of slipping (So that replaceable plate has teeth so things won't slip)
integrated limit stop prevents any slipping around the bolt head and allows higher torque to be applied (is this related to the ratchet?)
double-hex geometry makes for a positive connection with nuts or bolts and reduces the risk of slipping (is this the extra dimples?)
return angle of only 30° at the open end to avoid time consuming flipping of the wrench during fastening jobs (is this related to the ratchet?)


I am a bit confused.

[Ed Labadie]

Use with posidrive screws only, the tip angle is different from a Phillips.

Ed

[Tom Walz]

Phillips heads are designed to cam out when the pressure gets too high.

Pozidrive is (are) designed not to slip out.

Tom

[Myk Rian]

Hmm. The Wera website doesn't come up with a pz2 in their search.

[Andrew Pitonyak]

Hmm. The Wera website doesn't come up with a pz2 in their search.

It is probably this...

http://www-us.wera.de/product_detail_us.html?L=1&file=root_category_screwdrivers_kraftform_plus__se ries_300_355_pz&lang=en-US

[Greg R Bradley]

Good European brands are pretty good about correct labeling.

PZ2 means #2 Pozidrive
PZ1 means #1 Pozidrive, etc.

Phillips would be marked PH1, PH2, PH3, PH4. #2 Phillips is the most common size in Phillips screws followed by #1.

Sounds like the person that gave you the tools is clueless. I've seen some people refer to screws only as "straight" and "cross".

[Andrew Pitonyak]

Sounds like the person that gave you the tools is clueless. I've seen some people refer to screws only as "straight" and "cross".

Yeah, I think that you are correct...

[Bill Orbine]

The posidrive driver is good for the euro hinges such as Blum and Grass.

[Dan Clark]

Andrew,

The info above looks correct. I have several Wera screwdrivers and bit holders, and a Wera Zyklop set in Metric and SAE. IMO, they are some of the best hand tools available. As my old hand tools wear out, I replace them with Wera (or in some cases Wiha).

For more info, try Amazon or KC Tool Company (where I bought mine): http://www.kctoolco.com/Wera-Tools-s/2795.htm. Also, here's a link for the 3/8" Zyklop: http://www-us.wera.de/product_detail_us.html?L=1&file=root_category_ratchets_the_zyklop_ratchets_th e_zyklop_ratchets_3_8_the_zyklop_speed_ratchets_3_ 8_8000_b&lang=en-US.

Regards,

Dan.

[Tom Walz]

Andrew,

I would agree with the information put forth on the threads. Here is a link with several Wera PZ2 options that probably contain what your friend gave you. There is additional information in the description that may help answer any other questions you may have.

http://www.carbideprocessors.com/search.php?search_query=wera+AND+kraftform+AND+poz idriv&x=0&y=0#/?_=1&filter.size=null&filter.size=PZ%202&page=1&filter.tip_style=Pozidriv

[Phil Thien]

Phillips heads are designed to cam out when the pressure gets too high.



I think that is an often-repeated Internet myth.

Patent application:

http://www.google.com/patents/US2046837

[Ed Labadie]

The posidrive driver is good for the euro hinges such as Blum and Grass.

Correct....and anything that comes from Ikea.....

Ed