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 6320-01-232-4664
NSN 4140-01-106-4456
NSN 5975-01-434-3154
NSN 6685-01-484-1485
NSN 5925-01-224-7031
NSN 5996-01-018-1635
NSN 5910-00-615-9975
NSN 7035-00-142-9076
NSN 5998-01-433-5279
NSN 5998-00-009-5692
NSN 5925-00-391-6987
NSN 6145-01-464-4766