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JIS screw drivers

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https://sigforum.com/eve/forums/a/tpc/f/320601935/m/9260093974

February 06, 2021, 06:15 PM
coloradohunter44
JIS screw drivers
I just learned that their are actually two different types of Phillips style type screw drivers. Can someone chime in and tell me more. What are the best type/brand to buy? Ya learn something new every day if ya look hard enough...



"Someday I hope to be half the man my bird-dog thinks I am."

FBLM LGB!
February 06, 2021, 06:24 PM
egregore
Unless you're working on a lot of older Japanese cars and especially motorcycles (they were fond of using those on crankcase covers), I don't think you'll find much use for a JIS. On the few that remain, for example, screws holding brake rotors to a hub or the Nissan VG engine (which they stopped making 20 years ago) valve covers, I've never had any trouble using a #3 Phillips.
February 06, 2021, 06:30 PM
maladat
There's also Pozidriv. It's not as quite as similar to Phillips as JIS is, but it's a lot more common, and Phillips screwdrivers do a really bad job on them.
February 06, 2021, 06:31 PM
vulrath
3 types, actually. PoziDrive. It's what almost all of the screws in the machines I service at work use.

I really like the Vessel ball type drivers. Failing that, it's really hard for me to give up my Wiha DriveLoc tools.

edit: maladat beat me by thaaat much.


"In order to understand recursion, you must first learn the principle of recursion."
February 06, 2021, 06:36 PM
egregore
You might find this interesting. https://en.wikipedia.org/wiki/List_of_screw_drives

As for Pozidriv, I do see these a lot on older GM car interior trim screws. And yes, standard Phillips don't work for crap on them.
February 06, 2021, 06:43 PM
maladat
The good news about Pozidriv is that the screw heads are (supposed to be) obviously marked with little lines radiating out between the slots, so at least you don't have to wonder which it is.
February 06, 2021, 06:43 PM
hrcjon
JIS screws are different than Phillips screws are different than posidrive screws. etc. etc. On Japanese machines you are most likely to find JIS screws. and not just older ones. You can get decent JIS drivers in lots of places but amazon has them as imports for not too much money. I have some that I was gifted via a Japanese mechanic friend many years ago but also the amazon ones and not much quality difference. Phillips sucks.


“So in war, the way is to avoid what is strong, and strike at what is weak.”
February 06, 2021, 06:44 PM
BlackTalonJHP
Vessel Megadora Jawsfit
February 06, 2021, 08:26 PM
coloradohunter44
quote:
Originally posted by egregore:
You might find this interesting. https://en.wikipedia.org/wiki/List_of_screw_drives

As for Pozidriv, I do see these a lot on older GM car interior trim screws. And yes, standard Phillips don't work for crap on them.


Thx for the link. Always learning stuff on here.



"Someday I hope to be half the man my bird-dog thinks I am."

FBLM LGB!
February 07, 2021, 03:50 AM
FiveFiveSixFan
Don't forget the old Reed and Prince aka Frearson. Externally, the heads of fasteners look somewhat similar to a JIS head but the internal angles are different. They have a distinctive pointed tip which helps distinguish them from Phillips, etc.
February 07, 2021, 05:15 AM
PHPaul
quote:
Originally posted by egregore:
Unless you're working on a lot of older Japanese cars and especially motorcycles (they were fond of using those on crankcase covers), I don't think you'll find much use for a JIS. On the few that remain, for example, screws holding brake rotors to a hub or the Nissan VG engine (which they stopped making 20 years ago) valve covers, I've never had any trouble using a #3 Phillips.


I respectfully disagree.

JIS fits Phillips MUCH better than the other way around. In fact, I rarely even pick up my Phillips drivers since I got my JIS set.

Admittedly, some of that may just be the better quality of my Vessel drivers as compared to my old Crapsman drivers.




Be careful when following the masses. Sometimes the M is silent.
February 07, 2021, 06:03 AM
henryaz
quote:
Originally posted by PHPaul:
quote:
Originally posted by egregore:
Unless you're working on a lot of older Japanese cars and especially motorcycles (they were fond of using those on crankcase covers), I don't think you'll find much use for a JIS. On the few that remain, for example, screws holding brake rotors to a hub or the Nissan VG engine (which they stopped making 20 years ago) valve covers, I've never had any trouble using a #3 Phillips.


I respectfully disagree.

JIS fits Phillips MUCH better than the other way around. In fact, I rarely even pick up my Phillips drivers since I got my JIS set.

Admittedly, some of that may just be the better quality of my Vessel drivers as compared to my old Crapsman drivers.

Nope, it is the design of the JIS phillips drivers. The make better contact in a standard (USA) phillips screw head than the regular phillips screwdrivers do. Of course, they also make excellent contact in JIS screws, which are most of the time marked with a raised bump or X on the head. I carry a Vessel ball head driver with 3 JIS double-ended bits in my Tacoma tool kit.



When in doubt, mumble
February 07, 2021, 11:25 AM
ubelongoutside
I work on Japanese manufactured medical instruments and they use JIS fasteners.

I use a Wiha exchangeable bit driver and 5 years ago there were not many places carrying JIS bits.

I order all of mine from here Motion Pro they sell parts and tools for working on Japanese motorcycles.

Looks like they're available more places now,but I've had good luck with the ones from here.




February 07, 2021, 12:03 PM
mike28w
I find the JIS screwdrivers very handy when working on cheap electronics too. Such as toasters, clocks , radios, cameras etc...
February 07, 2021, 12:24 PM
jimmy123x
What type of screws are generally used in Europe (Italy mostly)? I see them on all of the Italian yachts, and half of the U.S. philips tips will work, but the angles are slightly different that the tip goes into.
February 07, 2021, 12:48 PM
BlackTalonJHP
quote:
Originally posted by jimmy123x:
What type of screws are generally used in Europe (Italy mostly)? I see them on all of the Italian yachts, and half of the U.S. philips tips will work, but the angles are slightly different that the tip goes into.


Pozidriv
February 07, 2021, 01:06 PM
pbslinger
https://sigforum.com/eve/forums...330062274#4330062274
February 07, 2021, 04:02 PM
coloradohunter44
quote:


Thx, I missed this somehow. I avoid Amazon these days, so I'll look elsewhere to get a few quality ones.



"Someday I hope to be half the man my bird-dog thinks I am."

FBLM LGB!
February 07, 2021, 04:13 PM
BlackTalonJHP
Check vesseltools.com / JDV Products or Frankstools. You can order from Rakuten Japan but you'll need to use a translation plug in your browser to view in English.
February 07, 2021, 06:26 PM
henryaz
 
You can buy a limited selection of Vessel tools on Amazon, as well. This is the set I mentioned above that I carry in my Tacoma. I includes JIS 1, 2, 3, 6mm slotted, and PoziDriv 2, 3.



When in doubt, mumble