Thumbscrew for gauges or 8-32, 8-24, 3mm or 4mm thread applications

Great for race cars or boats with individual gauges, or other applications where a thumbscrew is needed or makes sense.  Better than a crappy brass nut and joke of a lock washer that is always dropped and never found.   You may need to tap with your desired threads before installation.  You could also make this ¾ scale for a #6 application or other.  The concave end makes it easy for one hand installation behind obscured locations.  Lets see where you use it!