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Old 01-09-2012, 10:16 PM
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Default Weird Question

I saw a weird question today and thought maybe someone here might have the answer.

Why do metric socket wrenches use 1/4, 3/8, and 1/2 inch drives?
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Old 01-09-2012, 10:24 PM
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Probably to fit standard ratchets that guys already had. Standard was well... the standard before metric
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Old 01-10-2012, 06:35 AM
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I'm glad they do use standard drives, how bad would suck to have to keep two sets of ratchets around? It does make you wonder if they have metric ratchets in Japan though. Someone make a trip over there and ask
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Old 01-10-2012, 06:40 AM
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If it would make you feel mo betta then just call your ratchets 6.4mm or 9.5mm or 12.7mm. Problem solved!
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Old 01-10-2012, 07:02 AM
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It's likely a historical precedent. The interchangeable socket wrench appears to have been invented in Vermont. If the ratchet became popular in the US before spreading to countries using metric tools, changing the 'standard" ratchet size probably seemed unnecessary.

http://en.wikipedia.org/wiki/Socket_wrench
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Old 01-10-2012, 07:17 AM
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I remember the old tapered square drive bits. now that was a terrible design.
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Old 01-10-2012, 10:36 PM
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Quote:
Originally Posted by RockyMountainMobster View Post
I remember the old tapered square drive bits. now that was a terrible design.
Are you talking about the screws with a square head? If so those are some of the best screws out there. They rarely strip out and can take more torque than the cheap gold screws most people buy for projects.

If I am building something that requires screws I either use the square bit or star bit screws that are made for decks. Cost a little more but I don't have to worry about a broken screw head or the head stripping out.

Hey Kevin where can I buy one of those metric wrenches at I need a set for my American made Dodge
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Old 01-11-2012, 07:39 AM
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Quote:
Originally Posted by RockRunner View Post
...
Hey Kevin where can I buy one of those metric wrenches at I need a set for my American made Dodge
You laugh but I was working on a GMC rear caliper the other day and the bolt head size was 18mm! When everything else was SAE, this one was metric! On a US vehicle!
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Old 01-11-2012, 07:48 AM
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Just to keep things interesting, my US made Buell has a mix of SAE and metric. One never knows what one may run into doing service!

I suppose it was one more thing that pissed off the Hardley Makitson shops that had to carry Buell... except the Hardleys started showing up with the same issue! (The Japanese make better suspension and instrumentation...)
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Old 01-11-2012, 08:34 AM
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Quote:
Originally Posted by subzali View Post
You laugh but I was working on a GMC rear caliper the other day and the bolt head size was 18mm! When everything else was SAE, this one was metric! On a US vehicle!
My Bronco is a mix of metric and SAE as well as some 12 point and some 6 point. A bit of pain because I don't have them all figured out so I often need to go back to the box to get the right one.
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