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Skibum

Name Tahoe
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Date Last Access Mar 3, 2011 2:40 am
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Re: Honda HS928TCD auger shear pins - two types available
#1   Mar 2, 2011 10:30 pm
For Honda bolt, nut, and general parts, the first five digits of the part number are the function and component code. The next five are the bolt or nut dimensions. The next digit is the ISO code and the last number is the chemical surface treatment code. I suspect Honda made a surface treatment change to the bolt; maybe they changed it from zinc to something else and changed it from a flange bolt to a regular hex bolt. 

If you do some cross referencing  with the Honda snowblower shear bolt number 95701-06016-00 you will find that bolt is used on thousands of Honda applications. Everything from Honda automobiles, Honda motorcycles, Honda outboard motors etc. It appears the shear bolt is not a specially treated or tempered bolt at all. It is just an ordinary metric grade 8.8 bolt. By the way, as mentioned in other responses, a metric grade 8.8 is roughly equivalent to a SAE grade 5 bolt. I wouldn't use a metric grade 10.9 or SAE grade 8 bolt as a shear bolt. Its shear strength may be too high for the auger gear box.

I also would not use a SAE grade 2 bolt as some people suggest. These bolts tend to bend and smear instead of shearing off cleanly. Just try to remove a smeared bolt and observe the damage it has done to the mating parts and you'll understand.

You can order the Honda flange bolt from numerous online Honda auto dealers for a lot less than you can from many Honda Powersports dealers.  Hondapartsnow.com sells them for $0.58 each. Locking hex nuts are extremely cheap when bought by the package. Or just buy any hex M6-1.00 x16 grade 8.8 bolt. If you want  it to be a flange bolt however, it may be very hard to find at a local hardware store. Just use a washer. You can also change from metric to SAE. Just use 1/4 - 28 x 5/8. They may be even cheaper.

This is all my two cents worth, based on a lot of research after I got sick of being ripped off when I had to pay $2 for a little bolt that was said to be something "special".  My HS1132TA gets lots of use up here in the mountains around Tahoe and eats up those shear pins left and right. Not a fault of the machine though, my 600' driveway is required by local ordinances to have a 1' x 2' gravel filled trench all around it. Those rocks tend to mysteriously find there way into the auger no matter how hard I try to stay away from the edge. Especially at night. 

By the way, it seems everyone around Lake Tahoe has a Honda snowblower and the local hardware stores sell thousands of ordinary metric 8.8 hex bolts. Guess what they are used for? They also have OEM Honda bolts if you want to pay 5 times as much. 

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