A homogenous spherical body, a series of which provides the rolling elements in a bearing, ball (as modified). The item is designed primarily to alleviate friction. It may have other usages such as the checking component in a ball-type check valve. Excludes:ball,check; ball,valve,ported.
material will be in accordance with naval inventory control point, mechanicsburg, activity hx quality control, manufacturing and testing specifications reference number differentiating characteristics, zzzy criticality code justification