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bolt

bolt

42 3.8
A metal pin with a head that holds two parts together with a nut
  • noun
  • /boʊlt/
  • Specialized
translation icon : perno
  • Make sure to tighten the bolt before you use the machine.
  • nuts and bolts
  • flange bolt
  • head of the bolt

He recently watched the giant nut and bolt built over COVID.

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Examples

  • He used a bolt to secure the two wooden pieces together.

  • The first person to test these single bolt screws that are holding these things to the wall.

  • Get one more bolt on that flange and it's ready for Christmas.

  • I thought you might need some of your bolts replacing.

  • And you immediately know which nut pairs with which bolts and the other one as well.

  • Also this hole was a bit looser and none of the bolts for these pumps were tight anymore.

  • We were just doing some routine repair work, adjusting some bolts--

  • The various lots of bolts were combined with the nut lots and evaluated for torque-tension performance.

    Academic text (1996)
  • Also, he's got some stainless steel bolts, washers and nuts as well.

  • The mechanic replaced the old bolt with a new one to fix the engine.

Synonyms

fastener
vsbolt
7 3.2

A thing that holds two parts together, like a button or zipper

is the specific metal pin fastened with a nut rather than any attachment device
carriage bolt
vsbolt
  • Specialized
1 6.7

A metal rod with a round head and partial threads used to join wood through a hole

is the general metal pin fastened with a nut rather than this rounded head form
eyebolt
vsbolt
  • Specialized
1 5.0

A metal bolt with a looped head used to attach a rope or cable

is the general metal pin fastened with a nut rather than this looped attachment
toggle bolt
vsbolt
  • Specialized
1 6.9

A metal screw with a spring part that opens inside a hollow wall to hold heavy items

is the general metal pin fastened with a nut rather than this wall anchor
lag bolt
vsbolt
  • US
1 6.7

A heavy screw with a large head that joins wood pieces when you turn it with a wrench

is the general metal pin fastened with a nut not a driven screw
machine bolt
vsbolt
  • Specialized
4.1

A metal rod with a square or six-sided head and threads that you turn with a wrench

is the general metal pin fastened with a nut rather than this specific head
stove bolt
vsbolt
  • Specialized
6.8

A small metal piece with a round or flat head that holds metal parts together

is the general metal pin fastened with a nut rather than this small size
expansion bolt
vsbolt
  • Specialized
5.3

A metal part that spreads inside a hole to hold heavy things to concrete or brick

is the general metal pin fastened with a nut rather than this expanding anchor
safety bolt
vsbolt
4.5

A metal bar on a door that you lock from inside to stop people entering

is the general metal pin fastened with a nut rather than this security function

Idioms

2 6.5

A sudden event that shocks people and is not expected

1 8.6

To use up all your energy or chances so none remain

6.3

Very suddenly and without warning

To run away quickly, usually because you are afraid

To feel sudden shock or surprise

8.8

To use up all your energy or chances

Compounds

12 3.9

A strong tool with long handles and heavy jaws for cutting metal, like locks or chains

A sudden bright flash in the sky during a storm that often comes before thunder

carriage bolt
  • Specialized
1 6.7

A metal rod with a round head and partial threads used to join wood through a hole

1 2.0

Two metal pieces, a bolt and a matching nut, that hold parts together by screwing

1 6.7

A heavy screw with a large head that joins wood pieces when you turn it with a wrench

toggle bolt
  • Specialized
1 6.9

A metal screw with a spring part that opens inside a hollow wall to hold heavy items

A large ancient weapon that shoots heavy arrows or stones during war

8.6

A hole an animal runs into to hide from danger

6.3

An extra feature you add to a product or system to make it work better

4.8

An extra product you add to an existing system to give it new features

expansion bolt
  • Specialized
5.3

A metal part that spreads inside a hole to hold heavy things to concrete or brick

machine bolt
  • Specialized
4.1

A metal rod with a square or six-sided head and threads that you turn with a wrench

A metal bar on a door that you lock from inside to stop people entering

A metal bar you move to lock a door or gate

A metal bar you slide to lock and unlock a door or gate

stove bolt
  • Specialized
6.8

A small metal piece with a round or flat head that holds metal parts together

How Strong

bolt
  • Specialized
42 3.8
screw
85 1.2
nail
184 1.0
pin
153 1.0

Surface Forms

bolt singular
bolts plural

Etymology

A bolt that holds parts together is like a short metal rod or bar that passes through holes and is fastened with a nut. The name reminds you it is a metal rod used to join and hold pieces tightly.