Squareness Tolerances
Definition: The length and width of a sheet may measure correctly, but sometimes the sheet is not square. A square sheet has perfect 90° angles in each of the four corners. To check the squareness of a sheet without measuring the angles diagonal measurements can be used. The amount a sheet is out of square is the difference between diagonal measurements divided by two.
Example:
If one diagonal measures 84.75", and the other diagonal measures 84.50" then the sheet is said to be .125” out of square because (84.75-84.50)/2 = .125
| TOLERANCE OF RESQUARED SHEETS AND PLATE | |||||
| Up to 72" | Up to 120" | Over 120" | |||
|
Thickness Range |
Max Tolerance Out of Square |
Difference of Diagonal Measure |
MAX Tolerance Out of Square |
Difference of Diagonal Measure |
|
| 30 - 20Ga Shts. | 1/32" | 1/16" | 1/16" | 1/8" | * |
| 19 - 16GA Shts. | 1/16" | 1/8" | 1/8" | 1/4" | |
| 15 - 12GA Shts. | 3/32" | 3/16" | 3/16" | 3/8" | |
| 11 -7GA Shts. | 3/16" | 3/8" | 3/8" | 3/4" | |
| 3/16" - 3/8" Plate | 1/4" | 1/2" | 1/2" | 1" | |
| 3/8" - 5/8" Plate | 3/8" | 3/4" | 3/4" | 1 1/2" | |
| 5/8" - 1" Plate | 3/4" | 1 1/2" | 1 1/2" | 3" | |
* Contact us for Perforated Sheets and Plates over 120"