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 5855-01-448-9794
NSN 6610-01-458-9165
NSN 6145-01-309-2655
NSN 6645-01-515-7507
NSN 6130-01-250-2822
NSN 5998-01-091-1977
NSN 6320-00-483-0451
NSN 5855-01-569-8659
NSN 7035-00-553-6951
NSN 5960-01-537-8161
NSN 5985-00-040-0412
NSN 6220-01-620-2918