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#1
February 19th 11, 04:28 PM
posted to rec.autos.driving
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Why do car-makers use so many bolts with allen heads?
I have some allen wrenches so i was able to get my brake calipers off
with no trouble, but why do they do it? Why not just use standard bolts that will come out with a standard socket wrench set.? Are they afraid the dummies will use a pair of pliars and round off the bolt head and make things worse? 
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#2
February 19th 11, 08:42 PM
posted to rec.autos.driving
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Why do car-makers use so many bolts with allen heads?
In article
>, Car Crashes Mean Car Sales - GM loves highway criminals > wrote: > I have some allen wrenches so i was able to get my brake calipers off > with no trouble, but why do they do it? Why not just use standard > bolts that will come out with a standard socket wrench set.? Are they > afraid the dummies will use a pair of pliars and round off the bolt > head and make things worse? I think that allen heads lend themselves better to mass production. -- Alan Baker Vancouver, British Columbia <http://gallery.me.com/alangbaker/100008/DSCF0162/web.jpg>
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#3
February 20th 11, 02:22 AM
posted to rec.autos.driving
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Why do car-makers use so many bolts with allen heads?
On Feb 19, 1:42*pm, Alan Baker > wrote:
> In article > >, > *Car Crashes Mean Car Sales - GM loves highway criminals > > > wrote: > > I have some allen wrenches so i was able to get my brake calipers off > > with no trouble, but why do *they do it? Why not just use standard > > bolts that will come out with a standard socket wrench set.? *Are they > > afraid the dummies will use a pair of pliars and round off the bolt > > head and make things worse? > > I think that allen heads lend themselves better to mass production. I find that hard to believe and besides, we're talking pennies on a $40,000 product.
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#4
February 20th 11, 02:51 AM
posted to rec.autos.driving
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Why do car-makers use so many bolts with allen heads?
In article
>, Car Crashes Mean Car Sales - GM loves highway criminals > wrote: > On Feb 19, 1:42*pm, Alan Baker > wrote: > > In article > > >, > > *Car Crashes Mean Car Sales - GM loves highway criminals > > > > > wrote: > > > I have some allen wrenches so i was able to get my brake calipers off > > > with no trouble, but why do *they do it? Why not just use standard > > > bolts that will come out with a standard socket wrench set.? *Are they > > > afraid the dummies will use a pair of pliars and round off the bolt > > > head and make things worse? > > > > I think that allen heads lend themselves better to mass production. > > I find that hard to believe and besides, we're talking pennies on a > $40,000 product. You need to learn a little about the economics of mass production. The actual parts of a $40,000 vehicle probably cost the manufacture about $4,000 - $8,000. -- Alan Baker Vancouver, British Columbia <http://gallery.me.com/alangbaker/100008/DSCF0162/web.jpg>
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#5
February 20th 11, 04:05 AM
posted to rec.autos.driving
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Why do car-makers use so many bolts with allen heads?
In article
>, Car Crashes Mean Car Sales - GM loves highway criminals > wrote: > I have some allen wrenches so i was able to get my brake calipers off > with no trouble, but why do they do it? Why not just use standard > bolts that will come out with a standard socket wrench set.? Are they > afraid the dummies will use a pair of pliars and round off the bolt > head and make things worse? Allen head bolts are generally stronger than the standard variety, so they are use in brake calipers, where they are exposed to much higher stress than would standard bolts.
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#6
February 20th 11, 04:06 AM
posted to rec.autos.driving
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Why do car-makers use so many bolts with allen heads?
On 2011-02-20, Car Crashes Mean Car Sales - GM loves highway criminals > wrote:
> On Feb 19, 1:42*pm, Alan Baker > wrote: >> In article >> >, >> *Car Crashes Mean Car Sales - GM loves highway criminals >> >> > wrote: >> > I have some allen wrenches so i was able to get my brake calipers off >> > with no trouble, but why do *they do it? Why not just use standard >> > bolts that will come out with a standard socket wrench set.? *Are they >> > afraid the dummies will use a pair of pliars and round off the bolt >> > head and make things worse? >> >> I think that allen heads lend themselves better to mass production. > > I find that hard to believe and besides, we're talking pennies on a > $40,000 product. You don't drive a 40K product, you drive a beater and use a flashlight to see the dash at night... BTW Alan is correct, cap screws and torx are for manufacturing purposes. Much better for automation and manual air tools than hex head.
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#7
February 20th 11, 04:15 AM
posted to rec.autos.driving
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Why do car-makers use so many bolts with allen heads?
On 2011-02-20, Orval Fairbairn > wrote:
> In article >, > Car Crashes Mean Car Sales - GM loves highway criminals > > wrote: > >> I have some allen wrenches so i was able to get my brake calipers off >> with no trouble, but why do they do it? Why not just use standard >> bolts that will come out with a standard socket wrench set.? Are they >> afraid the dummies will use a pair of pliars and round off the bolt >> head and make things worse? > > Allen head bolts are generally stronger than the standard variety, so > they are use in brake calipers, where they are exposed to much higher > stress than would standard bolts. they come in the same grades as everything else. It's geometry of the head and the tolerances that make them different and more desirable for some applications.
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#8
February 20th 11, 05:40 AM
posted to rec.autos.driving
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Why do car-makers use so many bolts with allen heads?
On Feb 19, 11:15*pm, Brent > wrote:
> > they come in the same grades as everything else. It's geometry of the > head and the tolerances that make them different and more desirable for > some applications. Is that Usenet Engineer for "smaller and lighter"...? ----- - gpsman
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#9
February 20th 11, 04:35 PM
posted to rec.autos.driving
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Why do car-makers use so many bolts with allen heads?
On Feb 19, 6:22*pm, Car Crashes Mean Car Sales - GM loves highway
criminals > wrote: > On Feb 19, 1:42*pm, Alan Baker > wrote: > > > In article > > >, > > *Car Crashes Mean Car Sales - GM loves highway criminals > > > > wrote: > > > I have some allen wrenches so i was able to get my brake calipers off > > > with no trouble, but why do *they do it? Why not just use standard > > > bolts that will come out with a standard socket wrench set.? *Are they > > > afraid the dummies will use a pair of pliars and round off the bolt > > > head and make things worse? > > > I think that allen heads lend themselves better to mass production. > > I find that hard to believe and besides, we're talking pennies on a > $40,000 product. The bean counters are very attentive to a savings of a penny on a part. When you are producing millions of parts it adds up. Harry K
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#10
February 20th 11, 05:15 PM
posted to rec.autos.driving
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Why do car-makers use so many bolts with allen heads?
On Feb 19, 9:06*pm, Brent > wrote:
> On 2011-02-20, Car Crashes Mean Car Sales - GM loves highway criminals > wrote: > > > > > > > On Feb 19, 1:42 pm, Alan Baker > wrote: > >> In article > >> >, > >> Car Crashes Mean Car Sales - GM loves highway criminals > > >> > wrote: > >> > I have some allen wrenches so i was able to get my brake calipers off > >> > with no trouble, but why do they do it? Why not just use standard > >> > bolts that will come out with a standard socket wrench set.? Are they > >> > afraid the dummies will use a pair of pliars and round off the bolt > >> > head and make things worse? > > >> I think that allen heads lend themselves better to mass production. > > > I find that hard to believe and besides, we're talking pennies on a > > $40,000 product. > > You don't drive a 40K product, you drive a beater and use a flashlight > to see the dash at night... > > BTW Alan is correct, cap screws and torx are for manufacturing purposes. > Much better for automation and manual air tools than hex head.- Hide quoted text - What about the customer?. Allen heads are a PITB for us.
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