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Chris,
I have to jump in here while I see there are a bunch of other replies I simply must chime in.
MOST OF THE CRAP BOLTS SOLD AT THE BOX STORES WOULDN'T QUALIFY FOR EVEN GRADE 5!
<Stepping down from soapbox> The box stores get mass buys and have quanties made for them. If you look at the Home Depot free-stock bolts they even have a custom headstamp on them. This isn't a grade stamp it's a bolt code so the brain dead cashiers can quickly figure what to charge for them! Some of the other guys have noted the metric codes on their description line so everyone should know what to look for. Aircraft Spruce and Wicks sell good quality metric hardware. McMaster-Carr is a big catalog house that will sell hardware to the consumer, at a slightly inflated price. There is absolutely no reason to have a hardware failure. None of us should be using non-AN nuts and bolts for any sagnifigant part. Come on guys this is not an area to scrimp.
Bill Jepson
-----Original Message-----
From: Christopher Barber <CBarber@TexasAttorney.net>
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Sent: Thu, 27 Mar 2008 5:48 am
Subject: [FlyRotary] Re: Metric Bolts
Mark,
I ama gussen' that Lynn is talking about the Grade 5 and Grade 8 (usually gold in color, I think) hardware that is available from Lowes and HD. IIRC, one of these is comparable to certain Mil Spec. It may even be the "lower" Grade 5 which depending on the application could be used without issue or great concern. Of course your mileage and comfort level may vary.
That being said, exactly what "standards" are being adhered to and who is doing the checking is unknown to me just like my aviation parts<g>. FWIW.
All the best,
Chris
Christopher Barber
Attorney and Counselor at Law
5116 Bissonnet, No 418
Bellaire, Texas 77401
Serving the Needs of Senior Texans through
Planning with Purpose
281-464-LAWS (5297)
281-754-4168 Fax
www.TexasAttorney.net
Lynn,
Personally, I wouldn't feel comfortable using the grade of hardware typically found at the home stores. Should be fine for plugging up a hole here and there, but not for holding the airplane together. The bolts I bought at the NAPA store were very high grade, same as those from American Bolt. Not so from Home Depot.
Mark S.
On 3/26/08, Lehanover@aol.com <Lehanover@aol.com> wrote:
Lowes has metric bolts nuts and screws.
Lynn E. Hanover
In a message dated 3/26/2008 12:37:12 P.M. Eastern Daylight Time, msteitle@gmail.com writes:
Al,
I found a pretty good supply of metric bolts at the neighborhood NAPA store. They keep the bins behind the counter because people tend to rummage through them with no reguard for the next guy. They have
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