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 4140-00-240-1848
NSN 6220-01-463-3896
NSN 6610-00-052-8020
NSN 5945-00-312-9880
NSN 5999-01-292-0113
NSN 5925-00-807-7687
NSN 5910-01-505-1892
NSN 6130-01-515-9529
NSN 6645-01-157-4199
NSN 5960-01-425-1454
NSN 5905-01-548-5002
NSN 5945-01-432-1139