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Hot Rolled Round Bar Tolerances

Specified Size, inches Permitted Variation, Over, inches Permitted Variation, Under, inches Permitted Out-of-Round, inches
Up to 5/16 0.005 0.005 0.008
Over 5/16 up to 7/16 0.006 0.006 0.009
Over 7/16 up to 5/8 0.007 0.007 0.010
Over 5/8 up to 7/8 0.008 0.008 0.012
Over 7/8 up to 1 0.009 0.009 0.013
Over 1 up to 1-1/8 0.010 0.010 0.015
Over 1-1/8 up to 1-1/4 0.011 0.011 0.016
Over 1-1/4 up to 1-3/8 0.012 0.012 0.018
Over 1-3/8 up to 1-1/2 0.014 0.014 0.021
Over 1-1/2 up to 2 1/64 1/64 0.023
Over 2 up to 2-1/2 1/32 0 0.023
Over 2-1/2 up to 3-1/2 3/64 0 0.035
Over 3-1/2 up to 4-1/2 1/16 0 0.046
Over 4-1/2 up to 5-1/2 5/64 0 0.058
Over 5-1/2 up to 6-1/2 1/8 0 0.070
Over 6-1/2 up to 8-1/4 5/32 0 0.085
Over 8-1/4 up to 9-1/2 3/16 0 0.100
Over 9-1/2 up to 10 1/4 0 0.120
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