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RE: Bolt strengths

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I don’t know the circumstances of the substitutions to which you refer, but as a note of caution, substituting SAE bolts for A325 or A490 is not recommended.  The SAE bolts can match strengths but are less ductile than the A325/A490 bolts.


Eric R. Ober, P.E., S.E.


Holbert Apple Associates, Inc.

3423 Olney-Laytonsville Road

Suite 6

Olney, Maryland  20832

-----Original Message-----
From: Jnapd(--nospam--at) [mailto:Jnapd(--nospam--at)]
Sent: Thursday, April 21, 2005 3:41 PM
To: seaint(--nospam--at)
Subject: Re: Bolt strengths


In a message dated 4/21/2005 8:46:29 AM Pacific Daylight Time, chrisw(--nospam--at) writes:

Thanks Chris that site is quite informative. Great that is in one chart.  I sometimes get contractors asking to use grade 5 or 8 bolts and I was not sure what that referred too.


Joe Venuti
Johnson & Nielsen Associates
641 Louise Drive
Palm Springs, CA
760 322-0583