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 5895-00-292-2872
NSN 6150-00-570-0552
NSN 5945-01-462-4436
NSN 5996-01-076-2938
NSN 5920-01-209-6368
NSN 5975-01-434-2023
NSN 6240-00-266-9940
NSN 6645-00-025-4771
NSN 5835-01-531-0379
NSN 6130-01-291-1892
NSN 6320-01-207-9038
NSN 6620-01-554-3987