What is it #4

[Dan in North Houston]

I suppose this is some kind of masonry nail, but I've never seen one this with a head this wide or with a hole. At first I thought it might be some sort of key, but it is cut from sheet stock, and is roughly finished. Must be some special use, any ideas?

 

[Jerry Coulter]

The wedge is used to secure forms for poured concrete walls. The inner and outer wall form is held together with wires having loops on both ends, the wedge goes into the loop and holds the form. After concrete dries, the wedge is removed, the forms removed, and the loops are broken off leaving the wires in the wall.

 

[charlie n]

It's a wedge out of a stiff back clamp.As said used on concrete forms.

 

[Russ from MN]

I believe they are form pins, for Uniform pannels, different from Symons forms. I worked with both types 45 years ago.

 

[coshoo]

There are also flat form ties that are used instead of twisted wire when you're using 2X12's or other dimension lumber for forms- uses the same wedge to hold the forms together.

 

[hdrider]

We used tons of them in the coal mines along with J hooks to hang cables, line curtens and tubing from