DIN 6797 External tooth lock washer Form A
External tooth lock washers manufactured according to DIN 6797 allow the immobilization of fasteners such as bolts and screws which are subject to vibrations while maintaining uniform tightening torque, in any mechanical electrical or electronic application.
In addition to these anti-vibration properties, this washer also improves the quality of electrical circuits as each of the outer teeth forms an excellent point of contact.
The fact that Form A has teeth on the outer circumference of the washer means that there is uniform contact on the biggest possible surface area, thereby reducing the danger of loosening.
The surface of the bolt or screw should be flat and perpendicular to its vertical axis.
HV 350 ÷425 / HRC 36 ÷43