A fastening assembly may comprise a collar and a pin. The collar may have an aperture, a collar lock, which projects from an outer surface, and a pin lock, which is disposed on a portion of the aperture. The collar lock may be compressible and configured to elastically deform while introducing the collar to a wear member. The pin may have a pin lock engagement hole shaped to engage with the pin lock as it is inserted through the aperture of the collar. The fastening system may be used in a wear member assembly. The wear member may have a side opening in communication with a cavity formed on one end of the wear member. The side opening may have a collar lock engagement hole. The collar may be inserted into the side opening so that the collar lock engages the collar lock engagement hole. Methods and assemblies thereof.