BN 20695 - Lock washers medium series
Certificate is available on request for specific properties such as friction coefficients.
For fasteners with a tribological coating, it is essential to clarify the requirements in advance, in particular a validation of the friction values is required for nominal dimensions > M12!
Material Spring steel
Surface zinc flake coated GEOMET® 500 A with CresaCoat® C 313 Silver
Standard NFE 25-511 M