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 5999-01-311-6227
NSN 5975-01-390-5770
NSN 5985-01-099-1086
NSN 5905-00-251-5144
NSN 5996-01-028-3580
NSN 5905-01-085-1712
NSN 6320-01-377-5701
NSN 5895-00-327-8805
NSN 5945-00-156-7256
NSN 5999-01-624-9036
NSN 5835-01-198-2221
NSN 6685-01-232-4074