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 5915-01-209-5119
NSN 5855-01-175-3990
NSN 6685-01-495-1265
NSN 5915-01-439-8408
NSN 2925-00-596-9775
NSN 6130-00-528-7838
NSN 5975-01-192-8694
NSN 6135-01-495-0933
NSN 6105-00-202-2469
NSN 5855-01-010-4921
NSN 2925-01-087-4184
NSN 7035-01-069-3537