Not sure about your application but the grooves on the shear pins for
my Ariens are about 0.010" smaller in diameter than the rest of the
pin. It appears to be a grade 5 bolt originally.
On Tue, Dec 21, 2010 at 5:46 PM, Greg Gelhar <ggelhar@earthlink.net> wrote:
> Hi, I'm from Minneapolis Minnesota and we are about to break our December
> snow fall record. Today I broke a shear pin (bolt) on my 1971 Eska
> snowblower. To finish the job, I simply put in a bolt to replace that shear
> pin.
> I want to do it right and make a new pin. (The old one is lost in the five
> foot snow banks that line my driveway). Are there any rules of thumb as to
> how deep the grooves should be in the new pin? It should be a quick job on
> my lathe. I can't beleive that pin only lasted 39 years.
>
> Greg Gelhar
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