Mailing List flyrotary@lancaironline.net Message #26614
From: Bobby J. Hughes <bhughes@qnsi.net>
Subject: FWF Bolts
Date: Mon, 12 Sep 2005 17:44:46 -0500
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
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Thanks for the responses. I will go with metric grade 10.9 which the same rating as a US grade 8. I did find a good selection of flange bolts at http://www.nutsandbolts.com/  I ordered a shop assortment plus the specific one I know I need.  I also found a nice chart with ratings at Bolt Depot. It does not show the grade 12.9 but the minimum tensile is 180K. http://www.boltdepot.com/fastener-information/Bolt-Grade-Chart.htm
 
Spoke with Bruce T and he said the 10.9 was fine but overkill even for the counterweight bolts.
 
Thanks,
 
Bobby
 
 
 
 
 
 
 
 
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