Name that fastener

Dont ever try and use them in a "blind" hole, you will break the install tool.

Same goes for small gauge inserts, dont use 10-32, 1/4-20 in anything other than sheet metal or you will pop the end off the tool. Even 1/8" is to thick for the small size inserts.

Trust me.....
All I use any more for installing the nutserts is a thin piece of metal with a handle and a hole the size of the bolt being used. Kind of like a spatula. Just thread the bolt through the hole in the "spatula" and into the nutzert and tighten the bolt (preferably with a controllable impact tool) until the nutsert is crimped. Might put a little stress on the threads but it works for me.