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 6685-01-180-7298
NSN 2925-01-322-9780
NSN 6240-00-499-3276
NSN 6645-00-486-8649
NSN 5905-01-013-4372
NSN 5895-00-257-5945
NSN 5996-01-279-7545
NSN 5905-00-857-5954
NSN 6610-00-753-2281
NSN 5950-00-564-2950
NSN 5915-01-340-0650
NSN 6620-00-621-6951