I always used a grade 5...in the past. I didn't realize that there was a way to improve your recovery effort when you shear one. Use a Grade 2. Grade 2 isn't as brittle as 5 and surely less brittle than the Grade 8, ¼" recommended by JD for my roundbaler, but instead of snapping and in shearing, they leave you something to find when you have your new bolt in hand and hammer and punch. Also, rather than snapping during an overload, they sometimes just partially shear, whereby the bolt gets a notch in it but still works fine.
Other thing I found that really helps keep them alive is that I quit locking the nut/lock washer down tight on the yoke. I have been using Grade 2 with a locking nut, with the nut gapped off the yoke and I don't remember the last time I sheared a bolt.
Just something I picked up over the years that went contrary to my initial way of thinking.
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Today's Featured Article - Listening to Your Tractor - by Curtis Von Fange. Years ago there was a TV show about a talking car. Unless you are from another planet, physically or otherwise, I don’t think our internal combustion buddies will talk and tell us their problems. But, on the other hand, there is a secret language that our mechanical companions readily do speak. It is an interesting form of communication that involves all the senses of the listener. In this series we are going to investigate and learn the basic rudimentary skills of understanding this lingo.
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