Flanged; 6520-00-181-7349, dental operating chair and stool unit, mdl. Cm-185
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 5950-01-512-6199
NSN 4140-01-135-0998
NSN 6105-01-623-6204
NSN 5999-01-141-7589
NSN 5996-00-844-6227
NSN 5975-00-243-5447
NSN 6645-01-462-3754
NSN 6620-00-019-5499
NSN 5960-00-215-5884
NSN 5835-01-071-6376
NSN 5985-01-339-4664
NSN 6320-01-516-3836