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 6645-01-121-0530
NSN 5950-01-657-5599
NSN 4140-01-432-0855
NSN 5985-00-845-4818
NSN 5835-01-159-9088
NSN 6150-01-004-2031
NSN 5998-00-979-9600
NSN 5925-01-383-1892
NSN 5915-00-081-7815
NSN 6650-01-079-7788
NSN 5975-01-558-2106
NSN 5895-01-354-8452