On Fri, Apr 5, 2013 at 5:39 PM, dave <dengv...@charter.net> wrote: > Hi all, > > The wiki for buttress threads states the buttress threads tend to fail > because only the first 4 threads are load bearing. >
Which wiki are you referring to? is it one that should be concidered as authoritative > > In contrast to that is: > > www.dtic.mil/cgi-bin/GetTRDoc?AD=ADA483296 > > Which uses them in a munition where failure us not usually an > option. ;-) > > Does anyone have any experience or comments on either US or ISO buttress > (pull) threading. > > I'm trying to concentrate the stress axially rather that trying > to spread the collar as 60 degrees do. > There is a rotational force (think o ring being rolled on a shaft) > > The reason for my concern is that the collar is welded and the more > safety factor I can generate the better. > Is the weld the limit rather than the thread anyway Size matters, spread the load longer engagement, larger diameter thread > TIA > > Dave > > > Dave Caroline > > ------------------------------------------------------------------------------ > Minimize network downtime and maximize team effectiveness. > Reduce network management and security costs.Learn how to hire > the most talented Cisco Certified professionals. Visit the > Employer Resources Portal > http://www.cisco.com/web/learning/employer_resources/index.html > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > On Fri, Apr 5, 2013 at 5:39 PM, dave <dengv...@charter.net> wrote: > Hi all, > > The wiki for buttress threads states the buttress threads tend to fail > because only the first 4 threads are load bearing. > > In contrast to that is: > > www.dtic.mil/cgi-bin/GetTRDoc?AD=ADA483296 > > Which uses them in a munition where failure us not usually an > option. ;-) > > Does anyone have any experience or comments on either US or ISO buttress > (pull) threading. > > I'm trying to concentrate the stress axially rather that trying > to spread the collar as 60 degrees do. > > The reason for my concern is that the collar is welded and the more > safety factor I can generate the better. > > TIA > > Dave > > > > ------------------------------------------------------------------------------ > Minimize network downtime and maximize team effectiveness. > Reduce network management and security costs.Learn how to hire > the most talented Cisco Certified professionals. Visit the > Employer Resources Portal > http://www.cisco.com/web/learning/employer_resources/index.html > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > ------------------------------------------------------------------------------ Minimize network downtime and maximize team effectiveness. Reduce network management and security costs.Learn how to hire the most talented Cisco Certified professionals. Visit the Employer Resources Portal http://www.cisco.com/web/learning/employer_resources/index.html _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
