Use an Allen wrench (hex key) to secure with required torque as needed.
Although often used in machinery, they can be found around the home as well to secure window crank handles to window operators or to hold interior door knobs to spindles. This fastener is headless and contains an internal hex drive. Socket Set Screw 1/4in-20 X 5/16in Black Oxide Coated Steel 25PK Length is measured from the top of the fastener to the base of the cup point.3 & ASTM F912.