>
>On Thu, 26 May 1994 rhamilto@fox.nstn.ns.ca wrote:
>
>> About fifteen years ago while employed in building railway freight
>> cars, we had a salesman demonstrate the reason to use new bolts instead of
>> the ones removed especially where there is concern about the compression
>
>How close would I be if I hazarded a guess that he was selling bolts,
>fasteners, stuff like that?
>
Ray,
As we were fabricating *new* rolling stock, we always purchased new
fasteners so he didn't have to do much of a selling job.
It was interesting to note the difference in the clamping force
between old and new fasteners when torqued to the same value.
Bob
|