I need to drill holes in sheet metal for some bolts. The bolts will go through the sheet metal horizontally. I am a little concerned about the threading causing shear. I have seen hardware where a tube is used around a bolt, something like the following but smaller and much less expensive.
What I need would be sheet-metal quality so quite economical but I just don't know what to call it so I don't know how to search for it.

What I need would be sheet-metal quality so quite economical but I just don't know what to call it so I don't know how to search for it.