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 5920-00-103-7642
NSN 5965-00-497-8820
NSN 6240-01-583-3259
NSN 5855-00-763-2155
NSN 5855-01-643-1115
NSN 6240-01-470-2496
NSN 5950-00-252-8122
NSN 6645-01-280-0252
NSN 6685-00-881-7305
NSN 5915-01-209-2788
NSN 6685-01-044-4156
NSN 6220-00-592-0268