An item of any peripheral shape usually having one flat or spherical surface and a centrally located hole. It is designed for applications involving moving (kinetic) loads. Except for items fabricated from bearing quality synthetic (plastic) or composed of multilayer material, one bearing surface must either have a specific surface finish designation of 32 microinch (0.8 micrometre) or less, arithmetical average (aa) (arithmetic mean deviation) or one of the following conditions: be lapped or ground; have visible or detectable means of lubrication; grooves, indentations; or self-lubrication. The thickness must not exceed 25 percent of the outside diameter of the shortest distance between peripheral flats (when thickness and/or outside diameter is designated as a tolerance dimension, the maximum dimension will be used to determine compliance). Excludes straight, tubular (without flange) items having a bearing surface(s) parallel to the axis of the bore only. See also washer, flat and spacer, sleeve.
Classification: Thrust ball bearings
NSN 6685-01-219-7959
NSN 6110-01-651-5919
NSN 5930-01-046-9443
NSN 6135-01-499-3516
NSN 4140-00-889-7990
NSN 5990-00-419-7584
NSN 5960-00-420-0418
NSN 5998-01-046-7424
NSN 5985-00-858-5895
NSN 5925-00-981-2341
NSN 6320-01-561-7179
NSN 6650-01-582-2123