Identtity of brass screw used to convert to bolt on

I don't know the proper name of this bolt type thing. Please see pictures. I have used them on two occasions while converting to a bolt on neck, but I have never had a good experience with them. I am turning to you all to perhaps gain a better understanding of how to properly insert these.

My process has been to drill out a hole slightly smaller than the threads and then I would use a wide screwdriver to screw it onto the wood. At some point during this process I end up breaking off on of the sides that the screwdriver bears against.

My end results have been fine, but I feel like I am not doing something right here, it seems that I should not be breaking a section off. If anyone has experience, I would greatly appreciate to hear your process to install these.

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Permalink Reply by Thomas James on June 6, 2014 at 7:52pm

You have it backwards. I work at an old school hardware, and I address this question on regular basis. The slot is not for a screwdriver! It's for cutting the threads into the hole. Here is an excellent video to clarify the installation on these:

https://www.youtube.com/watch?v=tIhEqoKE8Dc

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Permalink Reply by LARRY KLOSE on June 6, 2014 at 10:34pm

In smaller sizes, insert in the side of a mandolin fingerboard to anchor a pickguard-;as done by lLnn Dudenbostel. i

Lots better than the commonly used pins which tend to loosen easily.

Caveat: don't use a hole that is as small as the inner shank on thin/brittle material. It will tend to split out the adjacent fingerboard. make the hole just small enough to catch the threads. Don't ask me how I know this, but super glue can be your friend.

Larry