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 5915-01-257-0482
NSN 5920-00-900-9255
NSN 6145-01-513-9750
NSN 6620-01-564-3041
NSN 6320-01-631-7828
NSN 6135-01-217-3292
NSN 6110-01-281-8858
NSN 6645-00-479-9334
NSN 6610-00-927-7415
NSN 7035-01-653-8015
NSN 5975-00-541-8531
NSN 5920-01-313-1648