| >While I'm sure many would disagree, I have used 20d common nails for | >years in my 10 hp White. I go through one or two each year. | >-- | >
| >Larry | | The purpose of a "shear bolt" is to provide a mechanical "fuse" that fails | first thus protecting more expensive/hard to repair/replace components. | | Larry chooses to use 20d common nails that work just fine. He has potentially | replaced the shear bolts with something slightly weaker. His snowblower is | still protected & he only has to replace them once or twice per year. Sounds | like a pretty good solution; cheaper & faster than hunting down the "right | bolt". | | Shear bolts are not some special metal just consist low strength steel. | | Bob
Umm, shear bolts are indeed a variant of the steel alloys you find in bolts. They're made to be on the brittle side (tempering?) so they'll break rather than bend under load.
Using nails is possible but shouldn't be done long term: They don't fit the shaft properly and will shear for no reason after awhile and eventually a bit of the steel will sheer inside, between the shaft and the impeller caseing, setting up a situation where you either won't need a shear pin at all, or, more likely, will give you a real bitch of a time getting the holes to line up again. I get $100 when I have to pull an auger apart to get at the shrapnel and usually the shear pin hole is non-round by then.
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