DIN 137 wave spring washer (Form B)
This washer is used in assemblies involving aluminium, plastic parts or insulating material etc. It is also recommended for locking assemblies where there is danger of damage to a painted or enameled surface. In electronics applications this washer is used to immobilize electrical contacts. This washer can be used with bolts requiring high tightening torque.
HRc 44÷51 (HV 430-530)