
            
                            Item # | 
                        
                            Fractional Diameter (inches) | 
                        
                            Decimal Diameter (inches) | 
                        
                            Diametric Tolerance (±) (inches) | 
                        
                            Sphericity (inches) | 
                                                        
|---|---|---|---|---|
| 1901-188 | N/A 3/16 | N/A .187 | N/A .003 | N/A .003 | 
| 1901-250 | N/A 1/4 | N/A .250 | N/A .003 | N/A .003 | 
| 1901-312 | N/A 5/16 | N/A .312 | N/A .003 | N/A .003 | 
| 1901-375 | N/A 3/8 | N/A .375 | N/A .003 | N/A .003 | 
| 1901-437 | N/A 7/16 | N/A .438 | N/A .004 | N/A .004 | 
| 1901-500 | N/A 1/2 | N/A .500 | N/A .004 | N/A .005 | 
| 1901-625 | N/A 5/8 | N/A .625 | N/A .004 | N/A .005 | 
| 1901-750 | N/A 3/4 | N/A .750 | N/A .004 | N/A .005 |