6650-12-158-4791

-086-1502 Mounted Optical Instrument Lens T035-1030-00RNCC: 3 | RNVC: 2 | DAC: 6 13 Jan 2012 6650-12-158-4791

5365-12-189-4998 5365121894998 121894998 is 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.