Graeme nearly had a fatal when the 12.9 we put in failed ( sheer ) ( very early failure too ) just as he pulled into the servo, lower grade has better fracture resistance in sheer, as this bolt is in, be careful Martin.... critical component. We used a bush and 8.8 or 10.9 which is in service after decades. Bigger 12.9 assures nothing, need to confirm sheer rating not end on end tensile. Even then your post concerns me, from hard won experience. HTH j *** this topic has been covered prior as i recall???
