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 5998-01-498-3508
NSN 6620-00-365-2701
NSN 2925-01-380-0869
NSN 5920-01-334-9848
NSN 5910-01-281-7352
NSN 6320-00-937-5625
NSN 5855-01-319-9757
NSN 4140-01-535-7865
NSN 5965-01-008-5351
NSN 2925-00-679-8131
NSN 5975-00-403-9798
NSN 5895-00-126-9861