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 5855-01-258-6180
NSN 6150-00-542-3965
NSN 6150-00-751-9173
NSN 5985-01-416-2956
NSN 5998-01-099-0093
NSN 6685-00-096-1485
NSN 4140-00-067-4798
NSN 5905-00-052-6832
NSN 5935-00-050-7471
NSN 6145-00-082-5172
NSN 6620-00-240-8766
NSN 6130-01-066-1802