An interesting link, but not one written in the language of engineering. Toughness, ductility, tensile strength, modulus of elasticity etc etc etc - all play their part. It has been some time since I did my materials course but when I was researching the source of my bolts, I did raise a few eyebrows with the relatively low torque specified (limited by the tube in the bush, not the bolt), and I was talking to industrial suppliers, not automotives. I'm sure Bill's bolts will do the job, but care should be taken when talking simply about tensile strength, it's not the only measure for how good the bolt will be. And we all KNOW the 10.9's are prone to reaching their fatigue limit and bending/breaking. Martin On 07/02/2012 18:53, Matthew wrote: > http://www.industrialchassisinc.com/Web-blog/?p=622 > > ------------------------------------ To address comments privately to the moderating team, please address: moderators@xxxxxxxxxxx For more info on the list, tech articles, cars for sale see www.dmcnews.com To search the archives or view files, log in at http://groups.yahoo.com/group/dmcnewsYahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/dmcnews/ <*> Your email settings: Individual Email | Traditional <*> To change settings online go to: http://groups.yahoo.com/group/dmcnews/join (Yahoo! ID required) <*> To change settings via email: dmcnews-digest@xxxxxxxxxxxxxxx dmcnews-fullfeatured@xxxxxxxxxxxxxxx <*> To unsubscribe from this group, send an email to: dmcnews-unsubscribe@xxxxxxxxxxxxxxx <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/