Grade Eight Bolts


[Follow Ups] [Post Followup] [Dodge Power Wagon Forum]


Posted by gmharris [71.105.178.157] on Sunday, May 01, 2011 at 23:01:15 :

Someone recently opined that grade eight bolts were too brittle to be used on suspension brackets.

I took a grade eight bolt and bent it over more than 90 degrees. No obvious signs of failure. When I tried to straighen it out, it failed at about 45 degrees.

I took a grade 3 bolt and bent it back and forth between zero and 90 degress several times. No failures. Obviouslly, the grade 3 bolts are more flexible than the grade 8 bolts, but given that the grade 8 bolt was able to withstand a more than 90 degree bend, I don't think they are too brittle for suspension work. Otherwise, what would be the point of grade 8 bolts?

I made the bends on the unthreaded portion of the bolts. When I made the bends in the threaded portion of the bolts, even the grade 3 and 5 bolts failed on the first 90 degree bend.




Follow Ups:



Post a Followup

Name:
E-Mail:
Subject:
Message:
Optional Link
URL:
Title:
Optional Image Link
URL:


This board is powered by the Mr. Fong Device from Cyberarmy.com