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.
essential to weapon system performance or operation, or the preservation of life or safety of operating personnel special features, preprovisioning support navicp is poe end item identification, feat criticality code justification