The best replacement for bolt is screw.

The best alternatives to bolt are rated as following:
★★★★★  screw
★★★★  megabus
★★★  lever action
★★  nut
★★  closed bolt
★★  powell
★★  arrow
★★  phelps
★★  opera mini
★★  4 bolt main
★★  stud
★  johnson
★  x bolt
★  12 bolt
★  semi auto
★  lever action rifle
★  blake
★  sportster
★  opera
★  semi
★  cap screw
★  bolt r spec
★  gay
★  7 bolt
★  set screw
★  rivet
★  4 bolt
★  cheetah
★  asafa
  tyson gay
  asafa powell
  dana 60
  semi auto rifle
  sportster 1200
  hex bolt
  farah
  rntg
  rudd
  2 bolt main
  winchester model 70
  12 bolt rear end
  remington 700
  bekele
  10 bolt
  bolt
  yohan blake
  round bolt
  9 inch
  gaye
  ruger m77
  x-bolt
  vulcan
  browning x bolt
  gatlin
  ventriculostomy
  2 bolt
  weld
  michael johnson
  open bolt
  883
  pin
  fireball
  mega bus
  4 bolt mains

Your alternative for bolt is not listed? Suggest!
Speaking about bolt, one probably shouldn't forget about plastic knob.

Other search terms related to bolt and their ratings are:
★★★★★ plastic knob
★★ knob
★ wing nut
You have in mind a companion for bolt and it is not yet here? Propose!



Google Trends

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bolt
screw
megabus