United States Ball Corp. subscribes to ASTM F2215 and ANSI/ABMA/ISO 3290 ball grade standards, which are listed below. The ball grades include many tolerances. The most common tolerances are listed below.

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The maximum allowable deviation in any precision metal ball means diameter from the basic diameter ordered. Metric and Standard.

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The most significant radial distance in any radial plane between a sphere circumscribed around the precision ball surface and any point on the industrial ball surface.