[DeTomaso] Save the watches! (was: axle shaft bolts source)

Tomas Gunnarsson guson at home.se
Mon Jan 12 14:28:36 EST 2009


Most commonly available bolts have rolled threads which means that the shank is slightly smaller in diameter than the threaded part. Worth paying attention to.

Tomas

----- Original Message ----- 
From: <MikeLDrew at aol.com>
To: <JDeRyke at aol.com>; <chaos at ross.aero>; <detomaso at realbig.com>
Sent: Monday, January 12, 2009 1:56 AM
Subject: [DeTomaso] Save the watches! (was: axle shaft bolts source)


>> 
>> In a message dated 1/10/09 11 15 38, JDeRyke at aol.com writes:
>> 
>> 
>> > Correct. And AN bolts also have a large radius under the hex head that 
>> fits
>> > into a large chamfer on matching AN washers. 
>> 
>>>>A quick trip to the hardware store revealed that this is demonstrably 
> untrue (at least in this case).   Here are a couple of photos of a Grade 8 7/16 
> bolt on the left, and the desired AN7-11A bolt on the right:
> 
>> http://www.poca.com/index.php/gallery/?g2_itemId=2841
>> 
> As you can see, the construction of the bolt head/shank area is identical.   
> There is no such 'large radius' that would create a problem.
> 
> Note also that for a given grip length, a normal Grade 8 bolt has to be 
> purchased in a much longer length.   That means that if you don't buy speciality 
> bolts, you will have to cut your hardware store bolts to the proper length.
> 
> 
>> >Be very sure that whatever
>> > washer you use has such a chamfer, or make one in the yoke adapter.
>> 
>>>>The factory parts book shows that an M-11 lock washer (split washer) is 
> used, but I'm unclear as to where it's supposed to go--under the head of the 
> bolt, or the nut?   Most of the time, I see these bolts installed with no washers 
> at all.   Given that the nut is a nylock locking nut, I can't really see a 
> need for a lockwasher too.   
> 
> Does anybody really know (as opposed to guessing) which side the lockwasher 
> went on?
> 
> Mike
> 
> 
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