</font><font color="blue" class="small">( It has become very obvious that we must select a committee to select the personel that will address the shear bolt dilema by setting up a task force to investigate the need for a committee to determine if more shear bolt research is needed.)</font>
The head of that committee should be Nomad as he was the first who jumped off the track of original topic;-0?
Concerning shear bolt tests (combined of tension+shear or shear stress alone); Tests on standart Grade 2, 5 or 8 won't be helpful. Because the true problem here is "selection of GradeX" where X is unknown. Tests should be made on farmers' own systems (shaft+pto+etc) each of these systems is different from another farmer's. I mean tensile+shear forces on farmer's connections should be determined first before determining the bolt type/size. Having test/measurement results of tousands of these forces measured on the farmers' systems, and doing some statistical averaging analysis, average GradeX can be determined. Well, since test number will be a lot by such real field tests on farmers' systems the only logical way of doing such tests is let them farmers do themselves and this can be done with a special bolt standart test specimen which will be given within the implement box.
By the way, if you search the net, all data available for fasteners of Grade2, 5 and 8 and in any size.
Ps: I think this is the 1st post on TBN forum with a posting date of 2004. ;-0