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 2925-01-391-9247
NSN 5895-01-591-0513
NSN 6135-01-495-0933
NSN 5990-01-452-0911
NSN 6220-00-917-0881
NSN 4140-01-244-5140
NSN 6135-01-342-3859
NSN 6220-01-042-9773
NSN 5855-00-014-5008
NSN 5998-00-160-4213
NSN 6685-00-767-6108
NSN 6650-00-070-0998