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 4140-00-803-8997
NSN 6610-01-067-4359
NSN 5975-00-079-9028
NSN 5999-00-180-4282
NSN 2925-00-779-3410
NSN 6320-00-036-3688
NSN 5895-01-059-4571
NSN 6320-01-516-3836
NSN 5945-01-194-4400
NSN 6145-00-372-3713
NSN 7035-00-997-6212
NSN 5925-00-499-2160