Aerospace -- Washers, chamfered, with counterbore, for pulleys, in alloy steel and cadmium plated or in corrosion-resistant steel and passivated -- Dimensions and masses
This International Standard specifies the characteristics of chamfered washers with counterbore — in alloy steel and cadmium plated, classification 900 MPa/235 °C; or — in corrosion-resistant steel and passivated, classification 900 MPa/450 °C. This International Standard is applicable to washers used with ISO 9219 bolts, diameter code 080 to 250, ISO 9216 nuts and ISO 1234 split pins in the assembly of ISO 7939 pulleys. It is also applicable to washers used in the assembly of airframe rolling bearings or spherical bearings.