The use of a brass tip set screw eliminates the need to use two standard set screws at a 90° angle to each other. The soft brass tip indents to the curvature of the shaft and effectively locks it in place.
Alloy steel heat-treated to Rc 28-34
Locks collars, pulleys, bearings, cams, etc., to shafts
Protects finished surfaces and threads
Restricts shaft end play for better control