Selbstsichernde Mutter M5 - Flachprofil

"Low-profile" M5 self-locking nuts with right (CW) or left (CCW) threads. The shafts of some engines are too short to use a standard size self-locking nut. These low nuts match in size and quality the original accessories supplied with most premium brands of motors (BrotherHobby, T-motor,...). 

"Standard" motors use the right CW thread.