This standard specifies the characteristics of heat resisting steel, countersunk, load spreading washers for use
in aerospace applications at temperatures not exceeding 650 °C.
They are intended primarily for use under the head of bolts with strength classification up to 1 250 MPa. They
are used to provide sufficient bearing area to prevent indentation of parent metals with low compressive
strength at operating temperatures, thus ensuring no relaxation in the bolt load occurs.
EN 3016:2008 Referenced Document
EN 2424 Aerospace series - Marking of aerospace products
EN 2516 Aerospace series - Passivation of corrosion resisting steels and decontamination of nickel or cobalt base alloys*， 2023-12-20 Update
ISO 4759-3 Tolerances for fasteners - Part 3: Washers for bolts, screws and nuts - Product grades A, C and F*， 2016-06-01 Update