Specification Tables

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Dimensional Tolerances

Rounds (Cold Finished)
1/16″ – Under 5/16″(+/- .001)
5/16″ – Under 1/2″(+/- .0015)
1/2″ – Under 1″(+/- .002)
1″ – Under 1 1/2″(+/- .0025)
1 1/2″ – Under 3 1/4″(+/- .003)
3 1/4″ – Under 4″(+/- .005)
Rounds (Hot Finished)
Over 3 1/2″ – 4 1/2″(+1/16″ / -0)
Over 4 1/2″ – 5 1/2″(+5/64″ / -0)
Over 5 1/2″ – 6 1/2″(+1/8″ / -0)
Over 6 1/2″ – 8″(+5/32″ / -0)
Over 8″ – 12″(+3/16″ / -0)
Over 12″ – 15″(+7/32″ / -0)
Over 15″ – 25″(+1/4″ / -0)
Hexes & Squares (Cold Finished)
1/8″ – Under 5/16″(+0/- .002)
5/16″ – Under 1/2″(+0/- .003)
1/2″ – Under 3 1/2″(+0/- .004)
1″ – 2″(+0/- .006)
Over 2″ – 3″(+0/- .008)
Over 3″(+0/- .010)
Hot Finished Angles
Leg LengthUp to 6″
(+/- 1/8″)
Over 6″
(+3/16″/-1/8″)
WeightUp to 6 lb. /Ft.
(+/- 7.1/2″%)
Over 6 lb. / Ft
(+/- 4.1/2″%)
Leg SquarenessRight Angle (+/- 2°)

Mill Flat Bars (Hot Finished)

WidthThickness
1/8″ – 1/2″
Thickness
Over 1/2″ – 1″
Thickness
Over 1″ – 4′
Thickness
Over 4″ – 6″
Thickness
6″ – 8″
Permitted Variations
in Width
To 1″(+/- .008)(+/- .010)(+/- .015)
Over 1″ – 2″(+/- .012)(+/- .015)(+/- .031)
Over 2″ – 4″(+/- .015)(+/- .020)(+.062/-0.31)(+.062/-0.31)
Over 4″ – 6″(+/- .015)(+/- .020)(+.062/-0.31)(+.093/-0.62)(+.093/-0.62)
Over 6″ – 8″(+/- .016)(+/- .025)(+.062/-0.31)(+.093/-0.62)(+.125/-.156)(+.125/-.156)
Over 8″ – 12″(+/- .020)(+/- .031)(+.062/-0.31)(+.093/-0.62)(+.125/-.156)(+.156/-.187)

Processed Flat Bar

ThicknessThickness VariationWidth Variation
Widths to 4″
Width Variation
Widths over 4″
Over .114 – .130(+/-.010)(+.094/-0.31)(+/-.094)
Over .130 – .145(+/-.012)(+.094/-0.31)(+/-.094)
Over .145 – Under 3/16″(+/-.014)(+.094/-0.31)(+/-.094)
3/16″ – Under 3/8″(+.050/-.010)(+.094/-0.31)(+/-.094)
3/8″ – Under 3/4″(+.060/-.010)(+.094/-0.31)(+/-.094)