A washer or cone or disk shape with a centrally located hole, designed to accommodate a flat or oval head screw and provide additional bearing area on the material being fastened. It may or may not have a flush flange feature.
Classification: Washers other than lock washers, iron or steel
NSN 5985-01-224-7522
NSN 5920-01-621-4673
NSN 4140-01-631-1896
NSN 6610-00-584-5055
NSN 5996-01-394-0095
NSN 5950-01-074-0050
NSN 6145-01-512-2308
NSN 5930-01-448-9787
NSN 6610-01-334-3157
NSN 5855-00-058-1293
NSN 5950-01-228-1541
NSN 4140-00-900-2341