fastener
1. [ noun ] a person who fastens or makes fast
Examples:

"he found the door fastened and wondered who the fastener was"

Related terms: person fasten
2. [ noun ] restraint that attaches to something or holds something in place
Synonyms: holdfast fixing fastening
Related terms: restraint button lock link sealing_wax nail knot buckle clip cringle carabiner clinch bellyband corrugated_fastener toggle clothespin cotter catch lashing locker nut_and_bolt paper_fastener pin screw dowel seal fillet slide_fastener snap_fastener hook_and_eye cleat toggle_bolt clasp adhere fasten
Similar spelling:   fasten
  fastened
  fasten_on
  fast_one
  fastening
  fasting
  faction
  fastness