13 splines equally spaced inside dia
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 5930-01-026-1241
NSN 5990-01-492-6575
NSN 6620-01-116-3983
NSN 6220-01-469-1822
NSN 6110-01-421-0778
NSN 6240-01-303-1003
NSN 5925-01-617-0364
NSN 6620-00-917-5259
NSN 5998-00-285-3186
NSN 5960-01-476-3239
NSN 5925-00-057-6762
NSN 6110-00-244-4907