Gauge # or
Thickness
Nominal
Thickness
Tolerance
Hr - Hr P&O
Tolerance
Cold Roll
Lbs. Per
Sq. Ft.
4 .224 .217 - .233 n/a 9.375
5 .209 .202 - .218 n/a 8.750
6 .194 .186 - .203 n/a 8.125
7 .179 .171 - .187 n/a 7.500
8 .164 .156 - .172 n/a 6.875
9 .149 .141 - .157 n/a 6.250
10 .134 .126 - .142 .128 - .140 5.625
11 .119 .112 - .128 .114 - .126 5.000
12 .104 .097 - .113 .099 - .111 4.375
13 .089 .083 - .097 .085 - .095 3.750
14 .074 .068 - .082 .070 - .080 3.125
15 .067 .060 - .074 .062 - .072 2.812
16 .059 .053 - .067 .055 - .065 2.500
17 .054 .048 - .060 .050 - .058 2.250
18 .048 .042 - .054 .044 - .052 2.000
19 .041 n/a .038 - .046 1.750
20 .036 n/a .033 - .039 1.500
Gauge # or
Thickness
Nominal
Thickness
Tolerance
Hr - Hr P&O
Tolerance
Cold Roll
Lbs. Per
Sq. Ft.
21 .032 n/a .030 - .036 1.375
22 .030 n/a .027 - .033 1.250
23 .026 n/a .024 - .030 1.125
24 .024 n/a .021 - .027 1.000
25 .020 n/a .018 - .024 .875
26 .018 n/a .016 - .020 .750
27 .016 n/a .014 - .018 .688
28 .015 n/a .013 - .017 .625
3/16 .1875 .177 - .217 n/a 7.660
1/4 .2500 .240 - .280 n/a 10.210
5/16 .3125 .302 - .342 n/a 12.760
3/8 .3750 .365 - .405 n/a 15.310
1/2 .5000 .490 - .530 n/a 20.420
5/8 .6250 .615 - .655 n/a 25.520
3/4 .7500 .740 - .780 n/a 30.630
1" 1.0000 .990 - 1.03 n/a 40.840
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