Quantity
When you request a quote, if you do not specify a tolerance for quantity, McNICHOLS provides the exact quantity you requested.
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Standard Shearing (Cutting) Tolerances
Standard and Flattened Tolerance
Random Cut +/- 1/8 Inch
Bond Cut +/- 1/2 Diamond
Grating or Catwalk +/- 1/4 Inch
Centerline Shearing Finished piece will be sheared symmetrically about a row of diamonds at the center of the piece and will have open diamonds along both the SWD and LWD.
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Stock Size or Machine Run Sheets
Type of Expanded Sheet Size Tolerance
Standard SWD
LWD
+3/16 inches/- 0 inches per foot of width.
+ 1 inch/-0 inches overall for plain steel
+ 1/4 inch/-0 inches overall for aluminum or stainless
Flattened SWD
LWD
+3/16 inches/- 0 inches per foot of width.
+ 1 inch/-0 inches overall for plain steel
+ 1 inch/-0 inches overall for aluminum or stainless
Grating/Catwalk SWD
LWD
+3/16 inches/- 0 inches per foot of width.
+ 3/4 inch/-0 inches (8-foot sheet) for plain steel
+ 1 inch/-0 inches (10-foot and 12-foot sheet) for plain steel
+ 1/4 inch/-0 inches overall for aluminum or stainless
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Camber
Type of Expanded Camber Tolerance
Standard & Grating
or Catwalk
The greatest deviation of a side edge from a straight line shall not exceed 1/16 inch per foot of dimension (SWD or SWD).
Flattened After Flattening, the greatest deviation of a side edge from a straight line shall not exceed 3/32 inch per foot of dimension.
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Flatness
Type of Expanded Flatness Tolerance
Standard & Flattened Sheets shall be free of waves or buckles that are in excess of 1-1/2 inches from a plane surface.
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Squareness
Type of Expanded Squareness tolerance
Standard Edges shall be such that any intersection side shall not be out of square in excess of 1/8 inch per foot either direction, to a maximum of 1/2 inch overall.
Flattened Edges shall be such that any intersection side shall not be out of square in excess of 1/8 inch per foot either direction, to a maximum of 3/8 inch overall.
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Taper
Type of Expanded Taper Tolerance
Flattened Sheet edges shall not deviate from parallele by more than 1/8 inch per foot of dimension, to a maximum of 3/8 inch overall.
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