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American Grade 8 bolts #182228
01/03/09 02:13 AM
01/03/09 02:13 AM
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NorCal
RylisPro Offline OP
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are these "JH" grade 8 bolts chinese? if so I wanted to replace them with some quality USA made pieces.
they are 1/2" bolts 3 inch under head length fine thread. I need four bolts.
Already called ARP and they don't have them in the 5 packs.
was wondering if anyone knew of a source as I dont mind paying for quality bolts
if not I'll just use them
thanks


73 `Cuda
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Re: American Grade 8 bolts [Re: RylisPro] #182229
01/03/09 02:17 AM
01/03/09 02:17 AM
Joined: Jan 2003
Posts: 20,539
Eagle, Idaho
Neil Online content
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Eagle, Idaho
What application?

Unless it's an internal engine fastener there is usually not a problem with cleaning up and re-using the factory Chrysler bolts. I'd trust an oem bolt long before a Home Depot bolt.

Re: American Grade 8 bolts [Re: Neil] #182230
01/03/09 02:18 AM
01/03/09 02:18 AM
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NorCal
RylisPro Offline OP
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sorry forgot to mention
its for my motor plate


73 `Cuda
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www.rylispro.com
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Re: American Grade 8 bolts [Re: RylisPro] #182231
01/03/09 02:20 AM
01/03/09 02:20 AM
Joined: Jan 2003
Posts: 20,539
Eagle, Idaho
Neil Online content
The Doctor is in.
Neil  Online Content
The Doctor is in.

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Re: American Grade 8 bolts [Re: RylisPro] #182232
01/03/09 02:32 AM
01/03/09 02:32 AM
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Posts: 104,346
Garden Grove, CA
OzHemi Offline
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ARP sells assorted size bolts as well as thier normal engine ones

Re: American Grade 8 bolts [Re: RylisPro] #182233
01/03/09 02:33 AM
01/03/09 02:33 AM
Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
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RapidRobert Offline
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Lincoln Nebraska
Quote:

[are these "JH" grade 8 bolts chinese? I'll just use them thanks


Chinese bolts would not have English letters on them. You're Ok as is.


live every 24 hour block of time like it's your last day on earth
Re: American Grade 8 bolts [Re: RapidRobert] #182234
01/03/09 10:45 AM
01/03/09 10:45 AM
Joined: Jan 2003
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North Dakota
6PakBee Offline
I Live Here
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North Dakota
If this link:

http://www.digest.net/bmw/archive/v5/msg02623.html

is to be believed, what you have was made in Taiwan. On the flip side, Grade 8 SHOULD be Grade 8 regardless of who sells it but you never know. There was at least one case I was aware of years ago when International Harvester (I told you it was years ago) had bought a batch of cheap bolting, used it in the front ends of trucks, and then started having failures. Real mess IIRC.


"We live in a time when intelligent people are being silenced so that stupid people won't be offended".
Re: American Grade 8 bolts [Re: RylisPro] #182235
01/03/09 10:49 AM
01/03/09 10:49 AM
Joined: Dec 2005
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Eastern North Carolina
cyphre666 Offline
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Eastern North Carolina
If you want something really hard
go to a CAT dealer.

Re: American Grade 8 bolts [Re: cyphre666] #182236
01/03/09 10:54 AM
01/03/09 10:54 AM
Joined: Oct 2003
Posts: 21,345
Marysville, O-H-I-O
70Cuda383 Offline
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home depot is cheap stuff. but, I've not had any problems with the stuff I've bought there. I just hate the gold zinc'd plating they put on them! its so hard to find black oxide bolts!

maybe fastenal has what you need? they have great selection, but too bad in my experience, they make you buy a bag of 50!


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Re: American Grade 8 bolts [Re: 70Cuda383] #182237
01/03/09 11:53 AM
01/03/09 11:53 AM
Joined: Jun 2007
Posts: 2,432
NorCal
RylisPro Offline OP
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1/2-20 x 3 Grade 9 Yellow Zinc Hex Cap Screw

http://www.fastenal.com/web/products/detail.ex?sku=20862
I think I found what I was looking for
these bolts are GRADE 9! wow! didn't know those existed
nice price too
thanks


73 `Cuda
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Re: American Grade 8 bolts [Re: RylisPro] #182238
01/03/09 01:35 PM
01/03/09 01:35 PM
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Bitopia
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jcc Offline
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Technically, there is no such thing as a "grade 9" rating, there is a brand label "grade 9' but not a sanctioned rating, even though its strenght may exceed grade 8.


Reality check, that half the population is smarter then 50% of the people and it's a constantly contested fact.
Re: American Grade 8 bolts [Re: jcc] #182239
01/03/09 02:08 PM
01/03/09 02:08 PM
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NorCal
RylisPro Offline OP
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you are right, I researched them a bit and they are L9 bolts. L9 bolts have a minimum tensile strength of 180,000 psi, which is significantly higher than the standard for Grade 8


73 `Cuda
Instagram: @rylispro
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Re: American Grade 8 bolts [Re: cyphre666] #182240
01/03/09 02:21 PM
01/03/09 02:21 PM
Joined: Nov 2003
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Lincoln Nebraska
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RapidRobert Offline
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Quote:

If you want something really hard
go to a CAT dealer.


I've used them & they are black in color I'm assuming that is black oxide


live every 24 hour block of time like it's your last day on earth
Re: American Grade 8 bolts [Re: RapidRobert] #182241
01/03/09 05:30 PM
01/03/09 05:30 PM
Joined: Aug 2003
Posts: 954
garnett kansas
rhad Offline
super stock
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garnett kansas
i bought some 5/16's bolts from fastenal the other day,it said made in china right on the plastic bag,i have used cat bolts in the past,they are good stuff!!
i was useing their grade 8 bolts for diesel head bolts,never broke one

Re: American Grade 8 bolts [Re: 6PakBee] #182242
01/03/09 08:36 PM
01/03/09 08:36 PM
Joined: Mar 2005
Posts: 166
Caldwell. Id
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edbux Offline
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Caldwell. Id
The Air Force got bit several years ago by a supplier. Sent them "grade 8 bolts" which were nothing more than standard bolts that were plated.
I can't remember the exact story, but someone tested
them found them not to the standard. After an investigation, they were found to have been made in China and someone along the way sent false documentation along with them.

The JH is probably the manufacturer.


1967 Dart 270 360/727
Re: American Grade 8 bolts [Re: RylisPro] #182243
01/05/09 04:23 PM
01/05/09 04:23 PM
Joined: Jun 2007
Posts: 2,432
NorCal
RylisPro Offline OP
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I found a CAT dealer nearby and got some bolts
gonna replace all my bolts with either CAT or ARP

the CAT deal was pretty cool
turns out they got a bunch of USA made tools and stuff


73 `Cuda
Instagram: @rylispro
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Re: American Grade 8 bolts [Re: RylisPro] #182244
01/05/09 04:29 PM
01/05/09 04:29 PM
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Posts: 1,075
United States
STLDuster Offline
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So you just go in to a Cat dealership and ask for them, how does that work? I have never been to one before.

Neat Idea!


"No great genius has ever existed without some touch of madness." - Aristotle
Re: American Grade 8 bolts [Re: STLDuster] #182245
01/05/09 04:33 PM
01/05/09 04:33 PM
Joined: Jun 2007
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NorCal
RylisPro Offline OP
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Yup, just found the closest one on their website and asked for bolts. They were hella cheap too $1.59 per bolt. they even gave me a part and tools catalog
http://www.cat.com/cda/layout?m=37648&x=7


73 `Cuda
Instagram: @rylispro
YouTube: RylisPro
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Re: American Grade 8 bolts [Re: RylisPro] #182246
01/05/09 05:21 PM
01/05/09 05:21 PM
Joined: Jul 2008
Posts: 1,075
United States
STLDuster Offline
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It would appear that JH fasteners are Chinese. Correct me if I am wrong because I have used a bunch of these from the local hardware store.

http://www.jhfastener.com/Elxwm.asp


"No great genius has ever existed without some touch of madness." - Aristotle
Re: American Grade 8 bolts [Re: RylisPro] #182247
01/05/09 06:00 PM
01/05/09 06:00 PM
Joined: Oct 2005
Posts: 8,870
Ontario, Canada
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Stanton Offline
Don't question me!
Stanton  Offline
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Ontario, Canada
"Grade 8" is a spec so it's unlikely that it matters where they're made, the spec will be the same i.e. you can't stamp "grade 8" on a plastic bolt !!!

As for that cheap bolt story, they bought exactly that ... cheap bolts, not a specific grade that wasn't up to spec.

Grade 8 in your application is probably overkill and a waste of money. Before spending money on good bolts you should research the strengths of the various bolts and determine your needs. In this application a grade 2 bolt will probably do just fine! Don't like that, then step up to a grade 5. Grade 8 ???? Unnecessary.

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