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 6220-00-480-9172
NSN 5965-01-202-1007
NSN 6145-01-606-8474
NSN 5930-01-232-3952
NSN 7035-00-188-6674
NSN 5920-01-622-2962
NSN 6320-01-129-9656
NSN 5960-00-724-7969
NSN 5998-01-644-4217
NSN 6320-00-036-3688
NSN 2925-00-888-5111
NSN 5990-00-994-0555