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JIS (Japanese Issue Screwdrivers)

  • Thread starter Thread starter jwhelan65
  • Start date Start date
J

jwhelan65

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Picked up a set of these a few weeks ago and have had some time to use them. No more stripping out heads with standard american phillips heads, these things are worth every penny..IMO

http://www.rjrcooltools.com/jis.cfm

JIS.jpg
 
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More info...

A little known, but 'troublesome' standard, the Japanese Industrial Standard (JIS for short) is a Pacific Rim phenomenon. You can never tell where you will find it now - it's everywhere. But start with the Pacific Rim: anything of Asian origin is almost certainly going to include it. The symptom of the problem is when your standard Phillips screwdriver 'hangs up,' and doesn't feel quite right. The Phillips driver won't go into the JIS Screw all the way because the corner radius of the screw is smaller than that of the Phillips scredriver! This is the primary cause of what we know as 'cam-out.'
Oddly enough, the Phillips standard was created to allow this condition so that you knew you had reaced maximum torque!
We carry two major brands of JIS Screwdrivers in a variety of formats. Moody Tools, Inc. is Made in Rhode Island. Vessel Tools are made in Japan. We have Moody Tools and Vessel listed separately as well, but this section just concentrates on JIS...

http://www.rjrcooltools.com/jis.cfm
 
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I have some of those Vessel screwdrivers and love them! Well worth the money.
 
My JIS set is made in Germany. :-s They're nice on Japanese amplifiers too.
 
I've got the exact same set, just bought from McMaster-Carr. Worth their weight in gold.
If you don't have a set, get one post haste.
 
Often wondered... are the screwdrivers in the OEM toolkits JIS type?? Seems they would/should be, no? Yes? :confused:
 
Frank Z. said:
Often wondered... are the screwdrivers in the OEM toolkits JIS type?? Seems they would/should be, no? Yes? :confused:
Click to expand...

Yes, but they're pretty low quality, with a useless handle.
 
I bought a set of Hozan JIS screwdrivers a couple years back. They aren't as fancy looking as the Vessel brand but a bit less expensive. They seem to be high quality and server me well. Definitely a worthwhile investment.

Thanks,
Joe
 
I ordered the Vessel JIS set of 3 screwdrivers for motorcycles from that supplier in the link about 6 months ago. Very fast shipping to this part of the world. I like the feel of the handles on those screwdrivers. Very satisfied with my purchase.
 
Joe Nardy said:
I bought a set of Hozan JIS screwdrivers a couple years back. They aren't as fancy looking as the Vessel brand but a bit less expensive. They seem to be high quality and server me well. Definitely a worthwhile investment.

Thanks,
Joe
Click to expand...
What kind of handles do these Hozan JIS screwdrivers have (hard plastic or rubber)?
Thanks!
 
Pretty much eliminated the JIS problem by going to SS allen fasteners where I could.
 
You want an American SAE screwdriver to fit a JIS slot...then all you gotta do is touch off the ends about 1/2 MM and they will settle down deeper into the slots..get some off brand cheapies and just grind the tip a smidge and youve got the same thing. The tip on SAE drivers prevent the drivers from settling down and being able to amply grip the slots in the screw.. Yes the angles bewteen the SAE and JIS slots slopes are just ever so slightly different, but the moded drivers will be just fine.
 
Thanks Chuck. Harbor Freight carries a dencent cheap screwdriver with a big rubber handle. Im gonna pick a few up and give it a shot. So you just grind the very tip down so the phillips edges sink deeper?
 
Thats what I did..cheapies that are just for the bike. The slope angles between the SAE and Jap issue varies slightly and the SAE drivers have that sharper pointed tip. If you look at the OEM screws on your bike, youll see that theres a FLAT in the center of the cross slits. Removal of a bit of the SAE tip allows the bit to get in deeper and get ahold of the cross slots better..check your screws and youll see what I mean. I was a die maker for 25 years and we never bought a single metric screwdriver ..ever.
 
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chuck hahn said:
You want an American SAE screwdriver to fit a JIS slot...then all you gotta do is touch off the ends about 1/2 MM and they will settle down deeper into the slots..get some off brand cheapies and just grind the tip a smidge and youve got the same thing. The tip on SAE drivers prevent the drivers from settling down and being able to amply grip the slots in the screw.. Yes the angles bewteen the SAE and JIS slots slopes are just ever so slightly different, but the moded drivers will be just fine.
Click to expand...

Saw that tip at the Cavalcade site and wondered if it worked.
 
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