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Tool Steel Tolerances

 

Drill Rod | Square Bars | Rectangle Bars

 

 

 

 

 

 

 

Drill Rod
Alloy(s)  Spec. Diameter, in.  Diameter Tol. (over(+)/under(-))
 A2, D2, H13, M2, O1, S7, W1  Up to 0.124  +/- 0.0003"
 A2, D2, H13, M2, O1, S7, W1  0.125 to 0.499  +/- 0.0005" 
 A2, D2, H13, M2, O1, S7, W1  0.500 to 3   +/- 0.0010" 

 

 

 

 

 

 

 

Square Bars
Alloy(s) Spec. Height, in.  Height Tol. (over(+)/under(-))
 1018, A2, D2, O1,  Any  +/- 0.001"
     
 Oversize - A2, D2, H13, O1  Any  + 0.010 to +0.015

 

 

Square Bars
Alloy(s)    Spec. Height, in.   Height Tol. (over(+)/under(-))
 W1  Cold Drawn   1.000" to 0.750" (largest dim.)  +/- 0.0015"
 W1   Cold Drawn    0.749" to 0.250" (largest dim.)  +/- 0.0010 
 W1   Cold Drawn   0.124" and smaller  +/- 0.0005

 

 

 

 

 

 

 

Rectangle Bars
Alloy(s)    Spec. Thickness, in.  Thickness Tol.  Spec. Width, in.  Width Tol.
 1018, A2, D2, O1  Precision Ground  Any  +/- 0.001"  Any  +/- 0.005"
           
(All Oversize):H13, A2, D2, O1, S7  Precision Ground  Any + 0.010" to + 0.015"  Any + 0.010" to + 0.015"
Spec. Length for alloys above, in. Length Tol.        
 18"  + 0.125" to + 0.250"        
 24"  + 0.1875 to + 0.375"        
 36"  + 0.250" to + 0.500"        
 72"  + 0.250" to + 0.750"        

 

 

Rectangle Bars
Alloy(s)    Size, in.  Standard Tol. (section)  Standard Tol. (length)
 W1  Cold Drawn   1.000" to 0.750" (largest dim.)   +/- 0.0015"   + 0.125", - 0"
 W1   Cold Drawn    0.749" to 0.250" (largest dim.)   +/- 0.0010"   + 0.125", - 0"
 W1   Cold Drawn    0.124" and smaller   +/- 0.0005"   + 0.125", - 0"