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 5985-00-402-0059
NSN 5998-00-564-5813
NSN 5930-01-311-9165
NSN 5975-00-255-6095
NSN 5998-01-539-5675
NSN 6645-00-117-9839
NSN 5905-01-403-2806
NSN 6685-01-459-1979
NSN 5945-01-551-9864
NSN 5910-01-417-3160
NSN 5975-01-038-8707
NSN 5895-01-069-3279