JIS phillips screwdriver

[shinyribs]

Did you know that the phillips screw drivers we use dont fit Japanese phillips screws? I didn't. I was hanging out at the bike shop today and the guy there was giving me old jap bike lessons,as usual. Yeah,they're different. If you look at a phillips screw and it has a little round punch mark on the head,up top where the phillips cross is,that means it is a JIS screw.JIS:Japanese Industrial Standard. The difference is the cross on ours is rounded in the corners,whereas the JIS screws have a really nice clean cut corner.I learn something every day!

Here ya go: http://www.webbikeworld.com/motorcycle-tools/jis-screwdrivers/

[TOOLS1]

I knew this, But try finding a JIS screw driver. I have found that the screw driver bits, for drills/impact drivers are pretty close to the JIS. And are harder then regular screw drivers.
TOOLS

[MarkPBG]

They're not always marked by a small dot….sometimes they're marked by a small "x" also. There was a similar drive used mostly in marine industry up until the 1970's called the frearson drive. I wish those became the standard, because all the different size screws used the ONE size tool to remove them. Nice sharp edges just like the JIS too.

[fathacarl]

 thanks for the info.  You learn something new everyday.  Have to get me a few new drivers

[seestheday]

There are several listed on amazon.  More expensive than getting some from my local store, but probably worth it in the long run.
I remember reading a review by someone on another forum about these and the guy could only say good things about them.  That said, he bought a very expensive set.  Something like $20 a screwdriver, but you have to pay for quality if you want it.

[Cabreco]

Ebay also has sets for sale for under $20

[shinyribs]

A set of JIS screwdrivers proudly made in the good ole' US of A....ironically awesome.

[sgtslag]

Read about it last year?  Have not bothered to get the real-deal drivers, though.  Probably should...  Thanks for the reminder, Shiny.  Cheers!  

[Cabreco]

I've been replacing the JIS screws on the bikes with 316 Stainless Steel metric Flat Head Socket Cap Screws

a good example of where they are desperatly needed is the brake reservoirs.





They work great and the risk of stripping them is minimal.

[shinyribs]

YAMAHA?!?!?! Blasphemy!!!!  I agree,allen heads rock.I don't know why they used those cotton pickin' phillips in the first place.They saved a dollar I suppose

[Lucky 1]

A little confusion here.
 I was around when the ISO International standards organization), standards went into effect.


When the first Hondas were imported to the United states the fine thread carburator screws
were IJS(not to be confused with raised dot JIS screws and tools 1985) until 1964-65 and what happened was that the threads were changed to the ISO style and were not marked.
Then people in the US started mixing these screws up and fuel leaked out of some carbs and caused fires.
So from then on all carb screws on all Japanese motorcycles and cars have the punch mark on the screw to identify that screw as a ISO thread screw. Go look at your bike.
Almost none of the IJS screws exist anymore except on very old motorcycles.

As far as phillips screwdrivers they were a big improvement because the screw driver would stay centered
on the screw ,where as the common flat blade would not stay centered. The problem was that when people worked on engines they did not tap on them with an impact driver OR they used a phillips screwdriver that was too large or two small.
The phillips screw drivers are numbered #1,#2,and #3.
#2 being the most common.
The cylinder head cover screws on Honda CB750's are #3 screws and many people strip them out and ruin them by using a #2 phillips screw driver on them.

If you are working on any Japanese engine and or motorcycle, and you run into a phillips screw get the right size bit and use an impact driver to loosen it. THEN use your screw driver to get it out.

If you just get your #2 phillips out and try to loosen the screw by hand you will ruin the screw. and then you will owe the owner a NEW screw for the one you ruined.

See what I mean?


 

[Lucky 1]

Almost NO IJS screws remain in circulation. There are JIS screws also.(See link at bottom )

If you have a metric screw from a Japanese product and it has a punch mark on it,
it is ISO and fine threads.

The other thing to remember is not to use cheap hardware store screws and bolts on your japanese product.
Most auto bolts and screws are SAE style and the threads are rolled after they are cut.
Many auto bolts are grade#5 NOT grade three like a hardware store bolt.

Look at the hardware store washers.
They are not auto or motorcycle size.
You need to use SAE washers so the inside diameter and outside diameter are correct.

LINK:
http://en.wikipedia.org/wiki/ISO_metric_screw_thread

RAISED DOT JIS SCREWS JIS NOT IJS:
http://www.instructables.com/id/When-a-Phillips-is-not-a-Phillips/step10/JIS-Japanese-Industrial-Standard/

[shinyribs]

...the plot thickens...

[TOOLS1]

 I guess I'll just use a hammer.
TOOLS

[Cabreco]

TOOLS1 wrote

 I guess I'll just use a hammer.
TOOLS

And a VICE GRIP!

[LukeM]

On a job site:
Rookie asks the old guy for a screw driver.
Old guy hands him a hammer.
"No no...I need a screw driver."
Old guy hands him the hammer again.
"No, you don't understand...the tool with the plastic handle, with the cross on the front, fits in a screw head."
"Oh...you mean the screw removal tool..."

The old guy is right, though: you can use a hammer to drive a screw that you don't intend to remove. Works well on outdoor decks, some joists and framing stuff.

Ask TOOLS.  He's knowledgeable about this stuff.
Luke M

[Lucky 1]

I have used those Phillips screw driver bits with the points ground down.
They do seem to work better. The bit fits in the screw better because old screws seem to have "crud"
down in the point.

[MarkPBG]

True, the parts store I worked at sold grade 5 and grade 8. Funny how many people paid extra for the grade 8 for use in non-shearing applications. lol

[shinyribs]

I always buy grade 8 regardless.I like the pretty gold coating.They are way cheaper than stainless and won't rust.I like shiny things

[MarkPBG]

Then this is for you, order now…..
http://www.zazzle.com/i_have_a_d_o_s_attention_deficit_ooh_shiny_tshirt-235403424144542549