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 5990-01-421-3325
NSN 5910-01-325-5228
NSN 5990-00-007-4313
NSN 6685-01-119-9213
NSN 4140-01-634-0330
NSN 6645-01-277-0530
NSN 5855-01-555-3354
NSN 5985-00-345-4302
NSN 6130-01-162-2310
NSN 6130-01-566-4982
NSN 6610-01-164-2227
NSN 5920-01-381-7691