Answer:

setscrew

Answer	Crossword Clue
SETSCREW	Shaft-collar attachment
SETSCREW	Threaded connector
SETSCREW	Tightening device

SETSCREW	Lathe device
SETSCREW	Metal parts fastener
SETSCREW	Bit of securing hardware
SETSCREW	Handyman's holdfast, sometimes
SETSCREW	Spring attachment