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 5930-01-099-1801
NSN 6620-00-816-9755
NSN 6135-01-056-4609
NSN 5960-00-172-7889
NSN 2925-01-218-5556
NSN 5935-00-888-9606
NSN 7035-01-512-2453
NSN 5996-01-454-5622
NSN 5998-00-457-7779
NSN 4140-01-288-2947
NSN 6685-01-533-9266
NSN 5996-00-141-0288