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What is this fastener? - Printable Version

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What is this fastener? - MsNomer - 12-14-2015

And how does it work?

It looks like a nail with a washer:



Except the "washer" is a really tight fit and goes between the two pieces of wood, embedded in the lower (upper in the pic):



The head does not penetrate the surface of the top board but is embedded in it:



To remove it, I had to pry the boards apart. Scary from a salvage wood standpoint because I did not know these were in there until I pried the boards apart. I thought the boards were just held together by the regular nails which were also present.


Re: What is this fastener? - DaveR1 - 12-14-2015

Does the washer move at all? Or is it part of the nail? Looks like a double-headed nail.

Or maybe, considering its length it's a concrete nail. See this for some info: http://www.ramset.com.au/product/detail/72/concrete-nails


Re: What is this fastener? - woodcutter199 - 12-14-2015

That nail is fired from a power actuated gun. It appears to be a HILTI brand so the gun would be a 27 caliber tool.
It is normally used to tie metal studs to a wall or floor


Re: What is this fastener? - MsNomer - 12-14-2015

Ahhh. The first piece was a furring strip on a concrete wall. The second piece was nailed over it?


Re: What is this fastener? - JGrout - 12-14-2015

MsNomer said:


Ahhh. The first piece was a furring strip on a concrete wall. The second piece was nailed over it?




That is the most likely: It did not set fully

Joe


Re: What is this fastener? - Dennis Puskar - 12-15-2015

To me that looks like a masonry nail, the nails and the applicator was sold by Sears ( craftsman ) Do not know who the manufacture was.


Re: What is this fastener? - Herb G - 12-15-2015

woodcutter199 said:


That nail is fired from a power actuated gun. It appears to be a HILTI brand so the gun would be a 27 caliber tool.
It is normally used to tie metal studs to a wall or floor




^^^^ This. A powder actuated nail gun fires these.
Ramset & Hilti are just a couple of the companies that make them.


Re: What is this fastener? - MsNomer - 12-15-2015

Makes sense considering that this was salvaged from a college dorm that would have had cement block walls.


Re: What is this fastener? - DustyDan - 12-15-2015

You may want to disinfect the wood considering the source