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 6685-01-443-2983
NSN 5920-01-401-5315
NSN 5990-01-493-4039
NSN 5925-01-391-1014
NSN 6320-01-631-7828
NSN 5975-01-605-2629
NSN 6135-01-336-3115
NSN 4140-00-435-5607
NSN 6135-00-248-4102
NSN 6645-00-022-8691
NSN 2925-01-612-0405
NSN 6650-00-932-2048