Right hand threads. Right to tighen left to loosen.
they are right hand threads
Standard right hand thread.
Those are right-hand threads.
Right
The simple answer is left handed threads are the opposite of right handed threads. If you have heard the old adage "Righty tighty, Lefty loosey" left handed threads are the "Lefty tighty, Righty loosey". Left handed threads are used for keeping counter clockwise rotating assemblies from coming loose.
The fan itself rotates CCW. The clutch nut is standard right hand thread, lefty loosey, righty tighty.
In plumbing we use BOTH right and left handed threads depeng on the useage Toilet handles for example are left handed threads threaded rod used for clevis hangers and riser clamps are right handed threads
Standard rh threads
the crank pulley bolt has standard threads.
Right handed.
Right Hand