The washers lock the little and middle nuts on the shaft. They go into the shaft groove and bending one of the tabs into one of the notches they will be positioned and blocked.

The washers lock the little and middle nuts on the shaft. They go into the shaft groove and bending one of the tabs into one of the notches they will be positioned and blocked.

The washers lock the little and middle nuts on the shaft. They go into the shaft groove and bending one of the tabs into one of the notches they will be positioned and blocked.

According to their applications the nuts may be of locking or unlocking type. They are used for fastening bearings on shafts and for demounting them from pressure adapter sleeves. Four or eight notches allow their mounting or demounting through pin or percussion wrenches.

The washers lock the little and middle nuts on the shaft. They go into the shaft groove and bending one of the tabs into one of the notches they will be positioned and blocked.