Cold Finished Carbon Steel Bar Tolerances

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
冷拔公寓
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
在1 - 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.