Enter a clue or pattern or both:
The Clue
Mechanical fasteners (9 letter answer)
The Answer
SETSCREWS
Tags
Notes
The answer SETSCREWS is so rare that it appears less than once every 2500 puzzles.
Definition
SETSCREW as a noun:
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