|Threaded Joints - Course: Techniques of Fitting and Assembling Component Parts to Produce Simple Units. Trainees' Handbook of Lessons|
Washers are placed under the heads of bolts or screws or under nuts, where
- the bearing faces are not properly machined,
- bolts, screws and nuts are to be tightened on oblong holes,
- slopes of the bearing face must be componensated.
1 washer on an oblong hole, 2 wedge-shaped washer on an inclined face
Washers are made of the same materials as bolts, screws and nuts and can have the same kind of plating.
There are washers of different sizes and thicknesses and to account for different properties in the proportion of hole diameter and width of the edge.
1 common washers for bolts and screws, 2 washers for elongated holes, 3 wedge-shaped washer for inclined surfaces, 4 washer for iron and steel work
Give uses of