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 5990-01-142-0538
NSN 6145-00-816-6166
NSN 5950-00-120-1276
NSN 6685-01-189-7208
NSN 6650-00-242-7961
NSN 6685-00-311-5700
NSN 6145-00-965-8069
NSN 6145-00-495-7391
NSN 5935-01-642-5792
NSN 5999-00-553-9831
NSN 5990-00-308-2538
NSN 5920-00-005-7106