The requirements for this grade are the same as those for U.S. No. 1 Halves except:
    
    
    
        
        (1) 
         At least 50 percent, by weight, are half-kernels;
     
    
        
        (2) 
         Both halves and pieces will not pass through a  5/16 -inch round opening; and,
     
    
        
        (3) 
         Comply with tolerances for undersize. (See Table III.)