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 2925-01-412-9520
NSN 4140-01-067-8242
NSN 6150-01-012-2185
NSN 6320-01-457-2805
NSN 6240-00-248-6517
NSN 6105-01-418-0824
NSN 5835-01-645-2892
NSN 5975-01-614-4529
NSN 6145-00-087-0676
NSN 6145-01-026-9085
NSN 5925-00-097-7490
NSN 6150-01-495-5235