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.
66 fed std all material responses overall material document and classification, steel comp 440b or steel comp 440c overall material, 0.0781 inches nominal rolling element diameter, afbma std tolerance for balls, grade 10 standard tolerance designation, surface hardness rc55.0-62.0 for type 440b and rc58.0-65.0 for type 440c special features