SQUARE HOLES
What size hole do you need?


1/8" Square


Not to scale
.125" (3.175 mm)
5/32" centers (3.969 mm)
64% open

22, 24 ga. Steel
20 B&S ga. Aluminum


1/8" Square


Not to scale
.125" (3.175 mm)
3/16" centers (4.763 mm)
45% open

22 ga. Steel


2/10" Square Straight


Not to scale
.200" (5.080 mm)
1/4" centers (6.350 mm)
64% open

20, 22 ga. Steel
20 B&S ga. Aluminum
22 ga. Stainless


5/16" Square


Not to scale
.313" (7.938 mm)
11/32" centers (8.731 mm)
83% open

22 ga. Steel

 


5/16" Square


Not to scale
.313" (7.938 mm)
7/16" centers (11.113 mm)
51% open

22 ga. Steel

 


3/8" Square


Not to scale
.375" (9.525 mm)
1/2" centers (12.700 mm)
56% open

16 ga. Steel

 


29/64" Square


Not to scale
.453" (11.509 mm)
1/2" centers (12.700 mm)
81% open

22 ga. Steel

 


1/2" Square


Not to scale
.500" (12.700 mm)
11/16" centers (17.463 mm)
53% open

16, 20 ga. Steel

 


3/4" Square


Not to scale
.750" (19.050 mm)
1" centers (25.400 mm)
56% open

12, 16 ga. Steel

 


© Harrington & King Perforating Company, Inc. 2016