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 5998-01-394-3797
NSN 6135-00-583-3966
NSN 5920-00-557-9859
NSN 7035-01-061-6424
NSN 4140-00-547-8918
NSN 6150-00-161-2480
NSN 5965-01-063-7894
NSN 6145-01-139-6557
NSN 5905-01-409-0738
NSN 6145-01-160-7658
NSN 5990-01-010-5475
NSN 5925-00-270-1704