Shallow sockets ??

[hosspuller]

This is a wedge anchor.

 

[bigtiller]

This is a wedge anchor.
View attachment 529149

Great, we're on the same page.
If I drill all the way through the concrete floor, how would I seat the anchor? The way I do it and the way the video shows, it needs to be hit with a hammer to begin the anchor setting and then tighten the nut.

 

[hosspuller]

Great, we're on the same page.
If I drill all the way through the concrete floor, how would I seat the anchor? The way I do it and the way the video shows, it needs to be hit with a hammer to begin the anchor setting and then tighten the nut.

The hammer merely drives the anchor into the tight hole. Notice the business end of the anchor. It's tapered up toward the threads. The ring around the taper is pulled against the taper by the hole wall. As it slides down the taper, it is expanded. This is the wedge between the hole wall and the taper. It is the pull of the nut that sets the anchor, not the hammer. Once it's set, it should not pull out before the yield point of the stud or thread. To get a flush floor, it has to be cut off or driven back down in the hole. If the hole bottoms before the stud length then it has to be cut. If the hole is through to dirt, it can be driven into the dirt and abandoned.

 

[bigtiller]

The hammer merely drives the anchor into the tight hole. Notice the business end of the anchor. It's tapered up toward the threads. The ring around the taper is pulled against the taper by the hole wall. As it slides down the taper, it is expanded. This is the wedge between the hole wall and the taper. It is the pull of the nut that sets the anchor, not the hammer. Once it's set, it should not pull out before the yield point of the stud or thread. To get a flush floor, it has to be cut off or driven back down in the hole. If the hole bottoms before the stud length then it has to be cut. If the hole is through to dirt, it can be driven into the dirt and abandoned.

Thanks, I'm going to try it that way next time. It sounds easier than doing the math to get the hole depth right. I also found a video showing it this way.

 

[hosspuller]

Thanks, I'm going to try it that way next time. It sounds easier than doing the math to get the hole depth right. I also found a video showing it this way.

Drilling through the slab also means you don't have to blow clean the hole of drilling fines. It all falls to the bottom, and into the dirt below.