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 5990-01-003-4209
NSN 5965-01-029-5222
NSN 6320-01-522-0318
NSN 5855-01-301-0158
NSN 5895-01-289-8682
NSN 6220-00-013-9523
NSN 6645-01-246-2725
NSN 6145-01-131-1739
NSN 5985-01-318-4506
NSN 5930-01-257-8889
NSN 5975-01-417-1752
NSN 5990-01-595-9441