Surface finish on top/bottom only per cat specification hfs
A circular-shaped item designed to maintain predetermined distance between assembled parts and/or for distributing pressure or preventing endwise movement between member parts. It has a solid cross-section and two flat parallel bearing surfaces. The distance between the bearing surfaces perpendicular to the axis of the centrally located hole shall not exceed 25 percent of the outside diameter. The diameter of the centrally located hole must exceed 75 percent of the outside diameter. Excludes laminated items. For items manufactured from impregnated graphite or lubricated nonmetallic materials, excluding felt or plastics, see gasket. For items manufactured from lubricated plastics, see bearing, washer, thrust. For items manufactured from lubricated felt, see felt, mechanical, preformed. Excludes disk, valve; insulator washer; and shim. See also spacer, plate and spacer, sleeve.
NSN 5998-01-339-8278
NSN 5965-01-489-5508
NSN 5855-01-539-4296
NSN 5920-01-334-2903
NSN 5998-01-398-0673
NSN 5945-01-066-2880
NSN 6685-00-862-4902
NSN 5998-01-583-3239
NSN 5915-01-512-1327
NSN 5945-00-152-9562
NSN 5950-01-495-6584
NSN 5895-00-789-5280