Serrated lock washers are primarily intended to establish electric contact in cases where the screwed parts are coated with non conducting lacquer and similar coatings. If such washers together with bolts and nuts of low property classes are used to...
Belleville spring washers type ‘A’ can be used in most light metal assemblies to provide a useful elastic spring action proportionately high with respect to the washer’s outer diameter. They can be flattened out completely when tightened, with...
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