Heavy Belleville washer also known as
SCHNORR® HDS Load Washer
Conical with a cupped cross-section, which yields under axial loads to provide continuous tension.
These washers conform to DIN6796 and are designed for high demands on the protection of bolt joints.
They have been specially developed for high-strength bolts of Classes 8.8 to 12.9.
This represents the most powerful form of safety washer in the form of a disc spring. The load of the washers have been matched to these bolts and are 70 to 90% of the bolt load in the flat state.
As a highly progressive load increase occurs at the end of the spring deflection when the load washer is flattened the load has been indicated as double the calculated value.
Reuse: If the washer is completely flattened during tightening, it loses its spring action and must not be reused.
