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Making snowblower Shear pins.


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#1 massey driver ONLINE  

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Posted December 30, 2017 - 12:23 PM

Made this jig a few years ago for making the shear pins for my snowblower. This is what it looks like and how it works. I use the drill to turn the bolt and just rock the hack saw untill the groove is cut. I use 2 1/2 long x 5/16" bolts and locking nuts. I use them that long so that the groove is inside the shoulder of the bolt nut the threads. I cut off about 1/2" when I'm done. 

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  • Gtractor, hamman, KennyP and 8 others have said thanks

#2 hamman OFFLINE  

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Posted December 30, 2017 - 12:26 PM

I had wondered if a guy couldn't make his own like that. Nice job on the jig. Thanks for sharing.                                                                            Roger


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#3 KennyP ONLINE  

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Posted December 30, 2017 - 01:49 PM

Nice tool for 'rolling your own'.!



#4 Jazz ONLINE  

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Posted December 30, 2017 - 02:11 PM

What grade bolts are you using? I think I have only ever broken 2 but that could change.



#5 poncho62 ONLINE  

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Posted December 30, 2017 - 02:23 PM

Probably a grade 5 bolt, they are fairly soft. 



#6 JBRamsey OFFLINE  

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Posted December 30, 2017 - 04:31 PM

Grade 5 is tougher than people realize. I would use Grade 2.
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#7 massey driver ONLINE  

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Posted December 30, 2017 - 05:04 PM

Yes I use regular grade 5 from the hardware store.You have to realize that cutting the groove makes the bolt more like a 1/4" solid bolt . Only break one when I pick up a bigger rock off the driveway or if the dog leaves hunk of firewood laying around.






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