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Tegger[_3_] Tegger[_3_] is offline
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Default Any idea what 'class 10.9' means in a black metric 8x125mm two-inch bolt?

Bob Stevens wrote in
:

On Mon, 17 Sep 2012 19:46:24 -0400, Ed Pawlowski wrote:

It is one of the strongest bolts available for tensile strength.


That's good it's strong on tensile strength because I want to use it
to remove brake drums.




In this appication you will be /compressing/ the bolt, not tensioning it.

In any case, the holes in the drum will split /long/ before the bolt ever
gets damaged.

10.9 is overkill for brake-drum removal. You can get away with the cheapest
bolts from any big box store. If they fit the threads in the drum, they are
good to use.

Two things to bear in mind:
1) possible rust ridge behind the shoes, and
2) the center hole rusted to the hub.
Do NOT simply keep screwing down on the bolts to overcome either of those
situations.




--
Tegger