A set screw used to bind parts together, esp. one for making a connection in an electrical circuit.
binding screw
setscrew
setscrews, 11. A screw used to fix a collar, knob, or other detachable part to a shaft or part of a machine; also called a grub screw.2. A screw in a cramp that brings the two sides in close contact.ThesaurusSeesetscrew