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 6320-01-111-8851
NSN 5855-00-879-7245
NSN 6220-00-629-9271
NSN 5965-00-653-4782
NSN 5975-01-186-4268
NSN 5975-01-347-3093
NSN 5990-01-244-9998
NSN 5945-01-560-8032
NSN 6105-00-660-8882
NSN 5998-01-594-3320
NSN 4140-01-518-5516
NSN 6620-01-207-0667