OT: When is a Phillips screw not a Phillips screw? - Page 2 - Mercedes-Benz Forum
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post #11 of 25 (permalink) Old 08-12-2019, 04:29 AM
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Here's some internet knowledge for those who like one stop shopping:
https://en.wikipedia.org/wiki/List_of_screw_drives
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post #12 of 25 (permalink) Old 08-12-2019, 01:33 PM
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Have you dealt with the all aluminum JIS screws on a Honda motorbike? Once you get them off you never want to screw them back in... it was routine to replace every JIS screw with allen head metrics. I still have a stockpile of these things.

Why anyone would design an engine with aluminum screws is beyond comprehension.
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post #13 of 25 (permalink) Old 08-12-2019, 07:49 PM
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Originally Posted by PanzerPuff View Post
Have you dealt with the all aluminum JIS screws on a Honda motorbike? Once you get them off you never want to screw them back in... it was routine to replace every JIS screw with allen head metrics. I still have a stockpile of these things.

Why anyone would design an engine with aluminum screws is beyond comprehension.
I have seen aircraft AL bolts but never on anything else. I have to ask my Honda biker friends.
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post #14 of 25 (permalink) Old 08-13-2019, 04:35 AM
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Standards are wonderful things. There are so many to choose from.
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"Engineered like no other car in the world." That's both a bug and a feature.
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post #15 of 25 (permalink) Old 08-13-2019, 04:59 AM
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Originally Posted by PanzerPuff View Post
Have you dealt with the all aluminum JIS screws on a Honda motorbike? Once you get them off you never want to screw them back in... it was routine to replace every JIS screw with allen head metrics. I still have a stockpile of these things.
A friend reports that her 2014 Honda NC700X uses Allen head screws instead of JIS.

"Engineered like no other car in the world." That's both a bug and a feature.
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post #16 of 25 (permalink) Old 08-13-2019, 01:43 PM
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Originally Posted by jaymaynard View Post
A friend reports that her 2014 Honda NC700X uses Allen head screws instead of JIS.
Yes correct, I had a few of the 750 honda inline fours, known as UJMs, 1970's vintage, those were aluminum screwed together, but lightweight and very fast.
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post #17 of 25 (permalink) Old 08-13-2019, 03:29 PM Thread Starter
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Just to turn the table, one time I used a chisel as a screwdriver.
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post #18 of 25 (permalink) Old 08-13-2019, 04:50 PM
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Just to turn the table, one time I used a chisel as a screwdriver.
Hey remember these? Whack it with a hammer and it turns the screw. Sometimes it works, sometimes the screw head flew off.
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post #19 of 25 (permalink) Old 08-13-2019, 05:00 PM
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Yep, sometimes indispensable! Worked on the door close plate and the screws survived.
A good tool for old farts who aren't as strong as they used to be.
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post #20 of 25 (permalink) Old 08-13-2019, 05:45 PM
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Post JIS / Phillips Screws

I was a Honda Motocycle Mechanic early in the 1970's and quickly learned that when faced with a 1956 ~ 1975 #2 looking philips screw on a Honda side cover, use a standard #3 Philips and no damage will occur .

Grainger, Inc. stocks a wide selection of good quality JIS screw drivers .

I've bought them off Amazon too .

I still use a hand impact driver 50 years later, they work great but only if :

A. you use the correct bit

B. whatever bit you use fits the screw head firmly ~ if it's all cheesed up from the DPO/DPM, get the proper size bit and a 32 oz. hammer and bang the bit in until it fits properly, then use the hand impact tool .

C. you *SMACK* it ~ if you use a light Chinese hammer or just tap the tool, it cannot work and you'll think it doesn't work when in fact they work very well and never leave tool marks on the original JIS screws *if* you use it correctly .

I was unable to get the door striker screws loose using a hand impact tool, I ever tried smacking the crap out if it with a 3 # single jack, no dice, the electric impact buzzed them loose *instantly* .
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