On Thu, 10 Oct 2013 11:38:53 -0500, -MIKE-
BREAK!? LMAO!

If you're getting close to breaking a steel pipe coupler by using it in
a pipe clamp, I would submit...
A. you're using a bulldozer to plant flowers.
B. you can't turn the clamps hard enough with your hands to break it.

Actually, I had cast iron pipe in mind when I posted.