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 5905-00-343-0670
NSN 4140-01-451-4180
NSN 6645-01-231-6636
NSN 5999-01-217-0591
NSN 5975-01-227-5543
NSN 6130-00-193-0340
NSN 5996-01-478-7331
NSN 6620-00-379-2856
NSN 6150-01-463-4544
NSN 5855-00-925-0114
NSN 6150-01-177-1732
NSN 6650-01-293-8719