Search Result for "setscrew": 
Wordnet 3.0

NOUN (2)

1. a screw that is used to adjust the tension on a spring;

2. 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; 



WordNet (r) 3.0 (2006):

setscrew
    n 1: a screw that is used to adjust the tension on a spring
    2: 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