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 5935-01-545-4071
NSN 5975-01-580-0569
NSN 5990-01-497-2138
NSN 5950-01-273-5345
NSN 5835-01-232-6904
NSN 6610-01-476-7412
NSN 5996-01-512-9275
NSN 5935-01-558-5441
NSN 6320-00-194-4252
NSN 6685-00-483-8607
NSN 6220-01-411-3993
NSN 6620-01-337-5668