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 5990-01-582-1977
NSN 6240-01-645-7751
NSN 5999-01-534-9220
NSN 5998-01-561-6483
NSN 6110-01-307-1390
NSN 5915-01-193-3213
NSN 5960-01-437-5318
NSN 4140-01-279-0058
NSN 5930-00-892-7503
NSN 6620-01-605-2590
NSN 5945-01-294-5738
NSN 5999-01-218-5840