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 5895-01-289-1227
NSN 5998-01-176-0097
NSN 5915-01-403-2599
NSN 6620-01-562-3862
NSN 5930-01-441-9882
NSN 6145-00-156-4394
NSN 6220-01-545-0299
NSN 5895-01-180-3159
NSN 6110-00-027-1351
NSN 2925-01-579-1010
NSN 6320-01-523-4954
NSN 5905-00-892-6757