6pt v 12pt Sockets....Why? - BMW Luxury Touring Community
 
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post #1 of 15 Old Jun 21st, 2008, 9:51 pm Thread Starter
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6pt v 12pt Sockets....Why?

I greatly prefer the 6pt sockets over the 12. Any reason to use the 12 over the 6? Can't think of any offhand...

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post #2 of 15 Old Jun 21st, 2008, 10:06 pm
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Re: 6pt v 12pt Sockets....Why?

12 point bolts/nuts. 12 point sockets/wrenches get a "bite" in 6 more positions than 6 points do.
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post #3 of 15 Old Jun 21st, 2008, 10:12 pm
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Re: 6pt v 12pt Sockets....Why?

I prefer the 6pt socket on a 6pt head/nut as it will grab the flat's of the bolt and not be likely to round-off the points like a 12pt socket is capable of.
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post #4 of 15 Old Jun 22nd, 2008, 9:28 am Thread Starter
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Re: 6pt v 12pt Sockets....Why?

How common are 12pt bolts?

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post #5 of 15 Old Jun 22nd, 2008, 9:56 am
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Re: 6pt v 12pt Sockets....Why?

Quote:
Originally Posted by browad
How common are 12pt bolts?
Quite common..in some applications. Jap cars seem to like using them on the engines and in aviation they are everywhere, especially jet engines.
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post #6 of 15 Old Jun 22nd, 2008, 10:11 am
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Re: 6pt v 12pt Sockets....Why?

I don't run across 12 point fasteners very often, but when I do I'm glad I have a set of 12 point sockets around.

12 point sockets are "quicker" in that there is less time spent getting the fit-up of the socket on a 6 point fastener. This may seem insignificant until you are working in some awkward, hard to reach place. Then sometimes the 6 point socket won't go on the fastener first try, and you have to stop,click the ratchet to turn the socket a little (two hand procedure) and try again.

12 point sockets often have a thinner wall making access into tight spots easier.

6 point socket are generally stronger, and preferred for high torque applications.

As pointed about above, if the fix of the socket on the fastener is a little sloppy, the 6 point socket is less likely to round off the fastener, slip, and leave your knuckles bleeding.

Having both around makes life a little easier.
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post #7 of 15 Old Jun 22nd, 2008, 11:14 am
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Re: 6pt v 12pt Sockets....Why?

Quote:
Originally Posted by CharlieVT
Having both around makes life a little easier.
Where the hell did I put my Whitworths?



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post #8 of 15 Old Jun 22nd, 2008, 3:21 pm
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Re: 6pt v 12pt Sockets....Why?

12 pts give more contact area. Usually don't find them that often (the mercedes NAG trans output shaft nut comes to mind). Mac and Snap-on sell 6 points that will grip a 6 point bolt thats mostly rounded off. Well worth the $ if you wrench for a living or maintain your own vehicle.
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post #9 of 15 Old Jun 22nd, 2008, 7:20 pm
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Re: 6pt v 12pt Sockets....Why?

Grif;

Only "old" tool men had whitworth, not saying I"M old.
And dont forget where you put the german allen wrenches with the pin.

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post #10 of 15 Old Jun 23rd, 2008, 6:59 am
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Re: 6pt v 12pt Sockets....Why?

Quote:
Originally Posted by browad
How common are 12pt bolts?
Very common in the hydraulic pump & motor industry. Especially Eaton/ Vickers products.

I suspect the initial reason for using these was that they could use a smaller bolt head size and still achieve a torque spec rating for the bolts. I.e. 7/16" 12 point flange head on a 3/8" grade 8 bolt. This allows also allows them to countersink the bolt heads into a casting and less area is required for socket clearance.

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post #11 of 15 Old Jun 24th, 2008, 3:07 pm
 
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Re: 6pt v 12pt Sockets....Why?

I still have a set of Whitworth Combination Wrenches. Wonder if the Simthsonian is interested in a donation?
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post #12 of 15 Old Jun 24th, 2008, 3:17 pm Thread Starter
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Re: 6pt v 12pt Sockets....Why?

Now all we need is a Lucas electrics comment. The Prince of Darkness comes! Let's see...what's left?

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post #13 of 15 Old Jun 24th, 2008, 6:13 pm
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Question whitworth?

I waiting for someone to tell me what the heck a whitworth is.
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post #14 of 15 Old Jun 24th, 2008, 6:46 pm
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Re: whitworth?

Quote:
Originally Posted by CharlieVT
I waiting for someone to tell me what the heck a whitworth is.
Oh, Charlie. You used to be my hero. http://www.google.com/search?hl=en&q=Whitworth+sockets



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post #15 of 15 Old Jun 24th, 2008, 7:23 pm
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Re: whitworth?

Quote:
Originally Posted by grifscoots
Oh, Charlie. You used to be my hero. http://www.google.com/search?hl=en&q=Whitworth+sockets
Well color me ignorant and lazy.
I could have googled it myself huh?

Thanks for the links Grif. I found it interesting reading.

This page I found most informative:
http://www.jag-lovers.org/xk-lovers/...th_system.html

Here's from that page: "For some reason now lost in obscurity, the distance across the flats of Whitworth hex nuts and bolt heads is not nice sensible fractions of an inch, nor is it millimeters, nor does it follow any discernable pattern such as a percentage of the bolt diameter. You are supposed to use special Whitworth sized wrenches. The sizes stamped on Whitworth wrenches refer not to the distance between the flats, but to the diameters of the nuts and bolts they are intended to fit. In practice it turns out you can get away with using metric wrenches in most cases."

If you need any Whitworth tools, I'd certianly recommend you get them from King Dick: Abingdon King Dick is a tool company based in the UK still making Whitworth size tools.

Well, in my own defense I have never owned any British Iron, BSA, Trumpet, Snortin Norton, Jag, or anything else that might have a Whitworth fastener that would require a Whitworth wrench. (Well, there is my Rolls )

I was bettin that I actually had a Whitworth wrench, and just didn't know the name for it, but dayem I'm now sure I don't have any such thing. I had thought it might the wrench to tighten the packing seal on the pitman of my sickle bar mower. The mower is a Wood & Smith, made in Canada I think, certianly not the UK.
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Last edited by CharlieVT; Jun 24th, 2008 at 7:28 pm.
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