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 6620-00-905-6590
NSN 5895-01-644-6377
NSN 5910-01-391-6068
NSN 5920-01-131-8371
NSN 6105-01-213-3479
NSN 2925-00-275-1807
NSN 5935-00-355-4804
NSN 6135-01-010-0891
NSN 6145-00-691-3609
NSN 7035-00-417-2967
NSN 5930-00-163-1078
NSN 5998-01-444-0441