Noun: setscrew 'set,skroo
- A screw (often without a head) that fits into the boss or hub of a wheel or cam etc. and prevents motion of the part relative to the shaft on which it is mounted
"He tightened the setscrew to secure the pulley to the shaft"
- A screw that is used to adjust the tension on a spring
"The technician used a setscrew to fine-tune the tension on the clock's mainspring"
Derived forms: setscrews
Type of: screw
Encyclopedia: Setscrew