IFI-136 2002 Studs Double End Studs
Normal Size or Stud Dia.     E       L≤6'   L>6' Type 1 * Type 2 Type 3   Type 4 * F G F G Max Min Max Min Max Min Max Min Max Min Max Min 1/4     0.250 0.213 0.250 0.241     0.750 0.875 1.000 1.125 5/16     0.313 0.271 0.313 0.303     0.875 1.031 1.125 1.281 3/8     0.375 0.329 0.375 0.364     1.000 1.188 1.250 1.438 7/16     0.438 0.385 0.438 0.426     1.250 1.344 1.375 1.594 1/2     0.500 0.444 0.500 0.488     1.250 1.500 1.500 1.750 9/16     0.563 0.502 0.563 0.550     1.375 1.656 1.625 1.906 5/8     0.625 0.559 0.625 0.611     1.500 1.812 1.750 2.062 3/4     0.750 0.677 0.750 0.735     1.750 2.125 2.000 2.375 7/8     0.875 0.795 0.875 0.859     2.000 2.438 2.250 2.688 1     1.000 0.910 1.000 0.983     2.250 2.750 2.500 3.000 1 1/8     1.125 1.023 1.125 1.106     2.500 3.062 2.750 3.312 1 1/4     1.250 1.148 1.250 1.231     2.750 3.375 3.000 3.625 1 3/8     1.375 1.256 1.375 1.354     3.000 3.688 3.250 3.928 1 1/2     1.500 1.381 1.500 1.479     3.250 4.000 3.500 4.250
* Type 1 studs shall have no an unfinished body with no specified body diameter tolerance
* Type 4 studs shall have body diameter tolerance as specified by the purchaser(milled or ground body)