On 06 Sep 2014 17:56:57 -0300, Mike Spencer
wrote:


"Pete C." writes:

What, if anything, should the marking on the head, "Y D" tell me about
the grade of the screw?

Ying Dong noodle factory perhaps?

Not the kind of technically informed answer I was looking for.

If it's safety critical just go spend the $20 and buy new grade 9
hardware from a reliable source.

Well, bought from a dedicated industrial hardware distributor, not from
the local hardware store or Walmart.

Good thought, though.


https://www.google.com/search?q=yd+bolt+head+marking


"At the core of liberalism is the spoiled child,
miserable, as all spoiled children are, unsatisfied,
demanding, ill-disciplined, despotic and useless.
Liberalism is a philosophy of sniveling brats."
PJ O'Rourke