Righty Tighty, Lefty Loosey: Difference between revisions

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The standard threading on any kind of hardware follows the '''righty tighty, lefty loosey''' pneumonic devise for unscrewing or tightening bolts, screws, etc.
The standard threading on any kind of hardware follows the '''righty tighty, lefty loosey''' mnemonic device for unscrewing or tightening bolts, screws, etc.


== Which way is left and which way is right? ==
== Which way is left and which way is right? ==


Holding a wrench at the 12 o'clock position determines whether you are turning left or right. If the wrench (in the most upright, 12:00 position) falls to the left, you are going "lefty loosey." If the wrench falls to the right, you are going "righty tighty."
Holding a wrench at the 12 o'clock position determines whether you are turning left or right. If the wrench (in the most upright, 12:00 position) falls to the left, you are going "lefty loosey." If the wrench falls to the right, you are going "righty tighty."
Another great way to help remember or figure out which way is right and which left is to visualize a steering wheel. A steering wheel turning to the right looks just like a wrench turning to the right. Same for the left.


== Directions ==
== Directions ==
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To tighten, turn to the right (as defined above).
To tighten, turn to the right (as defined above).
=== Exceptions ===
In the world of bicycles, there are a few notable exceptions, namely:
* non-drive-side pedals,
* many drive-side bottom bracket cups.


== See Also ==
== See Also ==


* [[Shop Manual]]
* [[Shop Manual]]
[[Category:Definitions]]

Latest revision as of 11:12, 25 January 2011

The standard threading on any kind of hardware follows the righty tighty, lefty loosey mnemonic device for unscrewing or tightening bolts, screws, etc.

Which way is left and which way is right?

Holding a wrench at the 12 o'clock position determines whether you are turning left or right. If the wrench (in the most upright, 12:00 position) falls to the left, you are going "lefty loosey." If the wrench falls to the right, you are going "righty tighty."

Another great way to help remember or figure out which way is right and which left is to visualize a steering wheel. A steering wheel turning to the right looks just like a wrench turning to the right. Same for the left.

Directions

To loosen, turn to the left (as defined above).

To tighten, turn to the right (as defined above).

Exceptions

In the world of bicycles, there are a few notable exceptions, namely:

  • non-drive-side pedals,
  • many drive-side bottom bracket cups.

See Also