Originally Posted by
DaveReidUK
While they might possibly exist, I've never encountered a circlip that came with instructions regarding which way round it should face..
The circlip won't have those instructions as they are considered a standard part. Its the aircraft maintenance instructions that will dictate that orientation as it does for this weight pin installation as shown below. Most clip installs are not direction specific in my experience. Even standard washers may have an install requirement by the OEM whether the smooth or sharp side faces one specific direction. There's also no mark on the clip as one can tell by feel or sight which side has a sharp edge or round edge quite easily.
