Perforated Metals > Square Perforations

SQUARE PERFORATIONS

1/4" Square (.25")
3/8" centers straight
45% open
3/16" Square (.1875")
5/16 centers straight
5/16" Square
7/16" centers staggered
51% open
Common Square Hole Sizes 
Consult factory for additional square patterns and thinknesses.
      MAX. PLATE THICKNESS
Hole Size Centers % Open Area M.ST. ST. ST.
* 3/16" 5/16" 32.7% 10 16
3/16" 7/16" 16.5% 10 10
7/32" 3/8" 30.0% 3/16" 12
* 1/4" 3/8" 45.0% 3/16" 10
1/4" 1/2" 25.0% 1/4" 10
* 5/16" 7/16" 51.0% 10 12
5/16" 15/32" 45.0% 3/16" 10
3/8" 9/16" 44.0% 3/16" 12
3/8" 5/8" 36.0% 3/16" 10
7/16" 5/8" 44.5% 3/16" 10

1/2" 5/8" 64.0% 10 14
1/2" 11/16" 53.0% 3/16" 10
1/2" 3/4" 45.0% 1/4" 10
9/16" 3/4" 56.0% 1/4" 10
5/8" 7/8" 51.0% 1/4" 10
* 3/4" 1" 56.0% 1/4" 3/16"
3/4" 1-1/8" 45.0% 3/8" 1/4"
7/8" 1-1/8" 61.0% 1/4" 10
7/8" 1-1/4" 49.0% 3/8" 1/4"
1" ANY #     1/2" 1/4"

1-1/6" ANY #    5/8" 1/4"
1-1/8" ANY #   5/8" 1/4"
1-3/16" ANY #   5/8" 1/4"
1-1/4" ANY #   5/8" 1/4"
1-3/8" ANY #   5/8" 1/4"
1-1/2" ANY #   5/8" 3/8"
1-9/16" ANY #   5/8" 3/8"
1-5/8" ANY #   5/8" 3/8"
1-3/4" ANY #   5/8" 3/8"
1-7/8" ANY #   5/8" 3/8"

2" ANY #   5/8" 3/8"
1-1/4" ANY #   5/8" 3/8"
2-1/2" ANY #   5/8" 3/8"
2-3/4" ANY #   5/8" 3/8"
3" ANY #   5/8" 3/8"
3-1/2" ANY #   5/8" 3/8"
3/3/4" ANY #   1/2" 5/16"
4" ANY #   1/2" 5/16"

M.ST. = Mild Steel, St. St. = Stainless Steel
* Sizes Illustrated
# = When required bar approaches metal thickness, check
with factory for allowable minimum.

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