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 6220-01-500-2188
NSN 5996-00-379-0379
NSN 5990-01-555-6616
NSN 6110-00-564-4045
NSN 6145-00-588-0794
NSN 5985-01-147-3900
NSN 6145-01-217-6854
NSN 5925-00-229-8024
NSN 6685-00-067-7817
NSN 6610-01-485-3074
NSN 5915-00-719-4099
NSN 5990-01-336-3976