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 2925-01-280-1911
NSN 5950-01-385-1099
NSN 6320-01-162-5977
NSN 5910-01-040-7970
NSN 6110-01-150-5025
NSN 2925-00-157-1602
NSN 6685-00-112-7040
NSN 5950-00-053-4740
NSN 5965-00-067-7393
NSN 6110-01-013-9313
NSN 6130-00-262-0426
NSN 5996-00-193-3459