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 6130-00-850-2300
NSN 5990-01-411-5930
NSN 6130-01-551-1185
NSN 4140-01-555-7275
NSN 7035-01-141-8076
NSN 6145-00-904-0279
NSN 5910-00-526-8005
NSN 2925-00-149-0760
NSN 6135-01-545-5519
NSN 6620-01-199-8580
NSN 5965-00-234-0219
NSN 7035-00-193-2269