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 controlled iaw navsea 0948-lp-045-7010 material control standard for level i items departure from cited document, zzzw criticality code justification