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post #1 of 21 (permalink) Old 01-08-2017, 01:27 PM Thread Starter
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Hardware Talk

I was having a discussion the other day with @pastordave1 and I suggested he use acorn nuts for his project. @Coop / @polecrasher mentioned to get an acorn nut of equal or greater strength. Great idea!!!??? How do we know the strength of hardware???

I am sure that most of us are familiar with the different markings of grade 5 and grade 8 hex bolts. But do we really know the strength of the bolts or do we just use a grade 8 because it is stronger? What I have found (if I am reading it right) is that for most accessories that we put on our bikes grade 2 is plenty strong enough. For example,,,1/4" - 1 1/2" grade 0 plain nut has a proof load stress of 69,000 psi. and a grade 7 is 175,000 psi.

I am not smart enough to interpret these numbers,,,I would not trust a 1/4" nut to hold up 69,000 lbs!!! Probably just dont understand something,,,

So since I do not want to waste valuable riding or working on the bike time trying to learn all this. I will just do like I always have,,,Guess what will work best for me!!!

I have attached a couple files so y'all can see for your self.

Attached Files
File Type: pdf American-Fastener-Tables.pdf (150.9 KB, 17 views)
File Type: pdf FastenalTechnicalReferenceGuide.pdf (1.44 MB, 20 views)

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post #2 of 21 (permalink) Old 01-08-2017, 02:04 PM
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Good info.....
Perhaps also include a link to McMaster-Carr....the final word in online ordering industrial-strength ANYTHING.....

And a link to that aircraft supply place whose name escapes me right now..... will post it when I get home to the real puter instead of this fartsMoan....


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post #3 of 21 (permalink) Old 01-08-2017, 06:41 PM
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@PhantomRider64 I normal use grade 5 for every thing. I am like you though. Some of the math they show seems a little fuzzy. I have used grade 8 bolts on a few items. Like my winch bumper and mounts. They also make acorn caps that fit over normal nut or bolts if Dave is worried about strength.

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post #4 of 21 (permalink) Old 01-08-2017, 06:49 PM
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I have had numerous bolts/nuts strip out that were less than grade 5. I don't mean over torque making them strip, just premature stripping out. Thus my recommendation of 5 or greater.
Often though we must use what we can get! I use nylon locking nuts ever time I can!

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post #5 of 21 (permalink) Old 01-08-2017, 07:38 PM
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Hmmm to be honest this post is helpful to me. I don't have a need to get any hardware at the moment but in the past I haven't thought about the strength or grade needed for the purpose at that moment. I just go to the hardware store and get the hardware that will match the thread of the original piece. It's probably a good idea to start paying attention to this.

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post #6 of 21 (permalink) Old 01-08-2017, 07:57 PM
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Here is a chart identifying head marks on bolts showing their grade.

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post #7 of 21 (permalink) Old 01-08-2017, 08:51 PM Thread Starter
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Quote:
Originally Posted by Gnarly View Post
Good info.....
Perhaps also include a link to McMaster-Carr....the final word in online ordering industrial-strength ANYTHING.....

And a link to that aircraft supply place whose name escapes me right now..... will post it when I get home to the real puter instead of this fartsMoan....


~Gnarly

Brer Bill says Infancy was so much fun, he is now looking forward to Adultery.

Ok,,,here it is,,,https://www.mcmaster.com/



Quote:
Originally Posted by Coop View Post
I have had numerous bolts/nuts strip out that were less than grade 5. I don't mean over torque making them strip, just premature stripping out. Thus my recommendation of 5 or greater.
Often though we must use what we can get! I use nylon locking nuts ever time I can!

Sent from my SM-G930V using Tapatalk
Hey,,,your Coop again!!! Most of what I have seen at hardware stores is grade 5. I try to use this grade the most unless it is something else that needs a bit more.



Quote:
Originally Posted by bigolepit View Post
Hmmm to be honest this post is helpful to me. I don't have a need to get any hardware at the moment but in the past I haven't thought about the strength or grade needed for the purpose at that moment. I just go to the hardware store and get the hardware that will match the thread of the original piece. It's probably a good idea to start paying attention to this.

Sent from my Nexus 6 using Tapatalk
Glad that it will help ya!!! The files I attached have a lot of information,,,a lot of which is over my head but it gives ya some idea what to expect from fasteners.


Quote:
Originally Posted by Scared View Post
Here is a chart identifying head marks on bolts showing their grade.

Just want to let y'all know that chart is only good for steel bolts. Stainless has different or no markings, same with brass.

Nuts have markings as well and I am going to start paying closer attention to them.

There is nothing like your knees in the breeze!!!


2013 Shadow Phantom

Previous Bikes
1995 Suzuki VS800GLS Intruder
1982 Suzuki GS450L


Ride Bell By Old Dad.

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post #8 of 21 (permalink) Old 01-08-2017, 10:19 PM
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Keep in mind some applications require a softer fastener than others.

ride safe !

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post #9 of 21 (permalink) Old 01-09-2017, 02:06 AM
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And for the hard-to-find small stuff:

http://www.microfasteners.com/



~Gnarly

Brer Bill says Infancy was so much fun, he is now looking forward to Adultery.

~~~Ride safe; ride smart....in memory of the one and only 7x~~~

The VT1100C2 ACEs: the '97 Flyin' Jenni, rescue dog Hobo LongNose, and the '96 on the right.

[IMG][/IMG]
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post #10 of 21 (permalink) Old 01-09-2017, 08:34 AM
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Although I still use it, I had to KNOW these various grades and their uses, at several maintenance technicians positions I`ve held...
Especially when repairing equipment which carry people...
Around the farm I use several "Shear Bolts" and hardened bolts also...
I`ve found Lowes carries MOST of the stuff I`ll ever use nowadays, being retired from HAVE TO KNOW I use whatever grades I need for whichever purpose/use...
Great info in these links, Thanks for bringing it up @PhantomRider64


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Last edited by "Captain D"; 01-09-2017 at 08:45 AM.
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