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 5925-01-164-9681
NSN 2925-00-373-8837
NSN 5990-01-113-8121
NSN 6150-01-313-8338
NSN 7035-01-283-2536
NSN 6610-01-444-4001
NSN 5975-00-811-3444
NSN 5835-01-100-7405
NSN 6145-00-382-6199
NSN 6645-01-311-8608
NSN 5975-00-851-1842
NSN 5835-01-540-3575