Is it a Philips or JIS? The screw on the STs are JIS and Philips don't work well in them. Back in the '60s all the bike shops referred to the screws as cheesehead screws. They recommended a Vessel Heavy Metal (lol) impact driver if the factory tool kit driver didn't work.
No, they are not. No Honda motorcycle has ever had a Phillips head screw on it from the factory, they are JIS head screws.
If the screw isn't too tight you can use a slotted/straight tip driver too. Doesn't mean it's the right tool for the job.
yep, I do it all the time.
Thank you for that lesson!That's Philips vs JIS.
There was a ton of it here at one point.
Just a brief into. Philips screws and drivers were supposedly designed with profiles to allow the driver to slip so the screw couldn't be over tightened. And it slips out when trying to loosen a stuck Philips screw.
The JIS screws and drivers were designed with profiles to not slip. A JIS screw could be over tightened I guess but it could be removed without damage using a JIS driver or JIS impact driver.
I've found I can use a JIS driver on a Philips screw but haven't tried it the other way 'round having already learned that lesson.
There was a vendor here once upon a time who sold JIS kit. He demonstrated the difference by holding a JIS screw horizontally and showing a JIS driver held solely by the JIS screw. This isn't the vendor's pic but it demonstrates the point:
JIS does this by design. Philips doesn't – by design. There are three cross head types maybe more. But the aren't the same.
Working on my 305 Scrambler I think I would have been hard pressed to find anyone who knew about JIS. Honda and other Japanese bike shops must have known but that info never got to any parts counter I visited. These days you can get JIS kit just about anywhere including Amazon.
Sorry for the wrong quote!!That's Philips vs JIS.
There was a ton of it here at one point.
Just a brief into. Philips screws and drivers were supposedly designed with profiles to allow the driver to slip so the screw couldn't be over tightened. And it slips out when trying to loosen a stuck Philips screw.
The JIS screws and drivers were designed with profiles to not slip. A JIS screw could be over tightened I guess but it could be removed without damage using a JIS driver or JIS impact driver.
I've found I can use a JIS driver on a Philips screw but haven't tried it the other way 'round having already learned that lesson.
There was a vendor here once upon a time who sold JIS kit. He demonstrated the difference by holding a JIS screw horizontally and showing a JIS driver held solely by the JIS screw. This isn't the vendor's pic but it demonstrates the point:
JIS does this by design. Philips doesn't – by design. There are three cross head types maybe more. But the aren't the same.
Working on my 305 Scrambler I think I would have been hard pressed to find anyone who knew about JIS. Honda and other Japanese bike shops must have known but that info never got to any parts counter I visited. These days you can get JIS kit just about anywhere including Amazon.
They work well on all Japanese vehicles, and better than Philips on Phillips screwsNo harm no foul.
I joined ST-O around 2011. From the early '60s till then I thought Philips won't budge? Bigger driver bigger hammer. This was inspite of the factory red-handled driver and a vintage Vessel with (unknown to me) JIS bits and tip. Got schooled by combat-hardened vets then got my two Vessel drivers (#2 and #2 stubby) and life is grand.
I've got this but have had no occasion to use it yet:
Vessel Megadora Impact Drivers at Amazon
This bit is something I didn't know till now. But I can see why that's the case. I'll keep that in mind since Philips screws are still a part of my world.
