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Catalog Page 35

STANDARD MANUFACTURING TOLERANCES
Cold Finished Carbon Steel Bars

Tolerances are Minus
Undersize variations in inches
There are no standard tolerances for straightness of cold finished bars.


COLD DRAWN OR TURNED AND POLISHED ROUNDS
_____________________________________________________________________________________________________________________________
                                                                                              Max Carbon Range
                                                                                              over .55% or all Grades
                                                                    Max Carbon Range          Quenched and Tempered
                                                Max Carbon Range    to 0.55% incl. Stress     or Normalized and
                            Max Carbon Range    over .28% to .55%   Relieved or Annealed      Tempered before Cold
Size Range in Inches        .28% or less        incl.               after Cold Finishing      Finishing.

1-1/2 or under                   .002               .003                   .004                      .005
Over 1-1/2 to 2-1/2, incl        .003               .004                   .005                      .006
Over 2-1/2 to 4, incl            .004               .005                   .006                      .007
Over 4 to 6, incl                .005               .006                   .007                      .008
Over 6 to 8, incl                .006               .007                   .008                      .009
Over 8 to 9, incl                .007               .008                   .009                      .010
Over 9                           .008               .009                   .010                      .011


COLD DRAWN HEXAGONS
_____________________________________________________________________________________________________________________________
3/4 or under                     .002               .003                   .004                      .006
Over 3/4 to 1-1/2, incl          .003               .004                   .005                      .007
Over 1-1/2 to 2-1/2, incl        .004               .005                   .006                      .008
Over 2-1/2 to 3-1/8, incl        .005               .006                   .007                      .009


COLD DRAWN SQUARES
_____________________________________________________________________________________________________________________________
3/4 or under                     .002               .004                   .005                      .007
Over 3/4 to 1-1/2, incl          .003               .005                   .006                      .008
Over 1-1/2 to 2-1/2, incl        .004               .006                   .007                      .009
Over 2-1/2 to 4, incl            .006               .008                   .009                      .011


COLD DRAWN FLATS
Tolerances for flats apply to thickness as well as width
______________________________________________________________________________________________________________________________
Width in inches
To 3/4 incl                      .003               .004                   .006                      .008
Over 3/4 to 1-1/2, incl          .004               .005                   .008                      .010
Over 1-1/2 to 3, incl            .005               .006                   .010                      .012
Over 3 to 4, incl                .006               .008                   .011                      .016
Over 4 to 6, incl                .008               .010                   .012                      .020
Over 6                           .013               .015


TURNED, GROUND and POLISHED ROUNDS
COLD DRAWN, GROUND and POLISHED ROUNDS
Undersize Variations in Inches
______________________________________________________________________________________________________________________________

Size range in inches      Turned, Ground        Cold Drawn, Ground
                          & Polished Rounds     and Polished Rounds
______________________________________________________________________________________________________________________________
1-1/2 and under                .001                   .001
Over 1-1/2 to less
 than 2-1/2                    .0015                  .0015
2-1/2 to 3, incl               .002                   .002
Over 3 to 4, incl              .003                   .003
Over 4 to 6, incl              .004*
Over 6                         .005*

*For nonresulphurized steels (steels specified to maximum sulphur limits under 0.08%) or for steels thermally treated, the tolerance is increased by .001".
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