At 01:39 PM 4/13/2011, neil n wrote: >Does the nut grade matter much in this application? I suspect not, >but double checking. Any time you've got an assigned torque, it was assigned with a specific grade of fastener in mind. So yes, it does matter.* But knowing the size and thread you can use a bolt torque calculator on the web to figure out the grade that is high-likelihood what they had in mind. And I would guess it's probably 8.8. http://www.google.com/search?q=bolt+torque+calculator *Prime example is the axle nut - if you still have the old axle nuts with six slots you're supposed to toss them next time they come off and replace with the ten-slot ones; because if you tighten the old ones to the new spec you'll probably wipe the threads. Similar issue with alternator pivot bolt on diesels. And conversely if you don't tighten the nut sufficiently for the grade of bolt, the bolt can break, so you can't be *too* far off in either direction. Yrs, d |
Please note - During the past 17 years of operation, several gigabytes of
Vanagon mail messages have been archived. Searching the entire collection
will take up to five minutes to complete. Please be patient!
Return to the archives @ gerry.vanagon.com
The vanagon mailing list archives are copyright (c) 1994-2011, and may not be reproduced without the express written permission of the list administrators. Posting messages to this mailing list grants a license to the mailing list administrators to reproduce the message in a compilation, either printed or electronic. All compilations will be not-for-profit, with any excess proceeds going to the Vanagon mailing list.
Any profits from list compilations go exclusively towards the management and operation of the Vanagon mailing list and vanagon mailing list web site.