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 5985-01-271-3044
NSN 2925-01-472-4144
NSN 5855-00-138-2386
NSN 4140-01-269-8378
NSN 5975-01-085-9021
NSN 6220-01-021-5642
NSN 4140-01-292-2709
NSN 5915-01-421-6253
NSN 6685-01-325-1803
NSN 6220-01-446-6430
NSN 6610-01-440-0604
NSN 4140-01-420-4586