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 6645-01-283-2080
NSN 4140-01-458-5569
NSN 2925-01-544-4880
NSN 5925-01-452-4493
NSN 5925-00-194-5072
NSN 6105-01-142-0234
NSN 5960-00-960-6805
NSN 6145-01-153-7197
NSN 5905-00-952-1755
NSN 6130-00-630-6952
NSN 5910-00-292-0048
NSN 6685-01-620-9005