[AT] Bolt Grades

[charlie hill]

Dave I almost wish you hadn't told me that.  I've finally logged enough air 
miles to convience myself that those wings CAN flap like a bird without 
breaking off.  Now you've gone and spoiled that!  LOL

Charlie
----- Original Message ----- 
From: "Dave Merchant" <nesys_com at ameritech.net>
To: "Antique tractor email discussion group" <at at lists.antique-tractor.com>
Sent: Monday, July 02, 2007 1:42 PM
Subject: Re: [AT] Bolt Grades


> This is a huge problem for the FAA  + aircraft operators.
>
> There is a continual flow of counterfeit "aircraft grade" parts from Asia,
> often very hard to detect without costly tests.
>
> I don't get on airliners any more...
>
> Dave Merchant
>
>
> At 01:21 PM 7/2/2007, you wrote:
>>I bought some "grade 8" bolts by the pound from a farm supply house (not
>>TSC) a few years ago and tried to use them to mount a hitch.  When I put a
>>torque wrench on them to set them at the 150 ft/lbs required by the hitch
>>manufacturer the nuts pulled the threads off the bolts.  That left the 
>>nuts
>>less than tight but impossible to remove.  I had to cut them out and start
>>over with some REAL grade 8 bolts from an industrial fastener supply 
>>house.
>>
>>I think the first ones were Asian made knock offs.  The moral of the story
>>is be careful about buying cheap bolts just because they have grade 8
>>markings on them.  I don't have a clue what the UH stands for.  Grade 8
>>bolts have 6 straight bar marks radiating out from the center.
>>
>>Charlie
>>----- Original Message -----
>>From: "Lew Best" <bee_keeper at earthlink.net>
>>To: "'Antique tractor email discussion group'"
>><at at lists.antique-tractor.com>
>>Sent: Monday, July 02, 2007 11:38 AM
>>Subject: Re: [AT] Bolt Grades
>>
>>
>> >I don't know; but TSC has grade 8 bolts; sell them "by the pound" if you
>> > have a store nearby.
>> >
>> > Lew Best near Waco, TX
>> >
>> > -----Original Message-----
>> >
>> > I've been on the search for some grade 8 carriage bolts to re-install 
>> > my
>> > gooseneck hitch in my pickup.? After much searching, I stopped by a
>> > hitch installer and he gave me four bolts that he was "pretty sure" 
>> > were
>> > grade 8, but he left some doubt in my mind.? So I thought I'd ask the
>> > list is anyone can interpret the stamping on the bolt head.? It says
>> > "UH" and nothing else.? I thought all grade 8 bolts were supposed to be
>> > yellow?? I figured I should use the best bolts I can find since they 
>> > are
>> > really the only thing holding the trailer to the truck.
>> >
>> > Enjoy, Joe
>> >
>> >
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>
> Dave Merchant
> kosh at nesys.com
> nesys_com at ameritech.net
>
> http://www.nesys.com
> http://www.nesys.org
>
>
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> No virus found in this incoming message.
> Checked by AVG Free Edition.
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> 12:19 PM
>