0.250" (0.770") Set Screw Hub

This 1/4" set screw hub is nearly balanced and great for high-speed applications.  While the hub works with round shafting, we recommend using ¼" D-Shaft in order to provide a flat surface for the set screw to push against.  The 10-32 cup point set screw requires a 3/32 hex key.  When tightened, it will indent the shaft that is passing through and create the necessary friction to keep a tight hold on the shaft.