Nut Driver Sizes


	           
   (Actual measurements from Craftsman nut driver set)

     SCREW              HEX SIZE              O.D. NUT
     SIZE             ACROSS FLATS             DRIVER
      2 ________________ .187 _________________ .312
      4 ________________ .250 _________________ .359
      6 ________________ .312 _________________ .437
      8 ________________ .344 _________________ .484
     10 ________________ .375 _________________ .500
     1/4 _______________ .437 _________________ .578
     5/16 ______________ .500 _________________ .656