COLD FINISHED CARBON STEEL BAR TOLERANCES

All tolerances in inches to the minus.

Size
Inches
Maximum of Carbon Range
0.28% or Less
Maximum of
Carbon Range
Over 0.28% to
0.55% Inclusive
Stress Relieved
after Cold Finishing
Maximum of
Carbon Range to
0.55% Inclusive
COLD DRAWN ROUNDS
up to 1-1/2
0.002
0.003
0.004
over 1-1/2 to 2-1/2
0.003
0.004
0.005
over 2-1/2 to 4
0.004
0.005
0.006
over 4 to 6
0.005
0.006
0.007
COLD DRAWN HEXAGONS
up to 3/4
0.002
0.003
0.004
over 3/4 to 1-1/2
0.003
0.004
0.005
over 1-1/2 to 2-1/2
0.004
0.005
0.006
over 2-1/2 to 3-1/8
0.005
0.006
0.007
COLD DRAWN SQUARES
up to 3/4
0.002
0.004
0.005
over 3/4 to 1-1/2
0.003
0.005
0.006
over 1-1/2 to 2-1/2
0.004
0.006
0.007
over 2-1/2 to 4
0.005
0.008
0.009
COLD DRAWN FLATS
Governed by
WIDTH
 
 
 
up to 3/4
0.003
0.004
0.006
over 3/4 to 1-1/2
0.004
0.005
0.008
over 1-1/2 to 3
0.005
0.006
0.010
over 3 to 4
0.006
0.008
0.011
over 4 to 6
0.008
0.010
0.012
over 6
0.013
0.015
—
Width governs the tolerances of both width and thickness on flats.