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 5985-01-551-1401
NSN 6145-00-275-4046
NSN 5930-00-404-4162
NSN 2925-01-125-9169
NSN 6220-01-337-9507
NSN 5935-01-372-7538
NSN 5945-00-793-1952
NSN 5935-01-242-2742
NSN 5855-01-479-1277
NSN 6685-01-361-9258
NSN 6650-01-239-2759
NSN 6135-01-522-3386