Smitty Two wrote in newsrestwhich-
:

In article ,
Gordon Shumway wrote:

I'm replacing the vinyl floor in our kitchen with a porcelain tile
floor. When I removed the old vinyl and the particle board
underlayment I found it was fastened with a fastener type that I
hadn't seen before.

The fastener is shaped similar to a letter "L" and has some small
ridges on the long leg. What kind of fastener is this and what are
they called?

G.S.

I call 'em flooring cleats.

Yep & here's a pic. http://www.powernail.com