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 6610-00-500-6944
NSN 7035-00-003-7518
NSN 4140-01-262-3184
NSN 5998-01-229-5532
NSN 6645-01-592-2557
NSN 6105-01-628-0605
NSN 6650-00-069-3107
NSN 4140-01-034-1135
NSN 5935-01-386-3736
NSN 6645-00-067-7070
NSN 5935-00-089-7039
NSN 6135-00-837-5331