To ensure uniformity, the following has been established as the single standard size for sheet and plate iron and steel in the United States, namely:
Number of meters | Approximate thickness in fractions of an inch | Approximate thickness in decimal parts of an inch | Approximate thickness in millimeters | Weight per square foot in ounces avoirdupois | Weight per square foot in pounds avoirdupois | Weight per square foot to kilograms | Weight per square meter to kilograms | Weight per square meter in pounds avoid dupois |
|---|---|---|---|---|---|---|---|---|
0000000 | 1/2 | .5 | 12.7 | 320 | 8 p.m | 9.072 | 97,65 | 215,28 |
000000 | 15/32 | .46875 | 11,90625 | 300 | 18,75 | 8.505 | 91,55 | 201,82 |
00000 | 16/7 | .4375 | 11.1125 | 280 | 5:50 p.m | 7.983 | 85,44 | 188,37 |
0000 | 32/13 | .40625 | 10,31875 | 260 | 16.25 | 7.371 | 79,33 | 174,91 |
000 | 3/8 | .375 | 9.525 | 240 | 15 | 6.804 | 73,24 | 161,46 |
00 | 32/11 | .34375 | 8,73125 | 220 | 13,75 | 6.237 | 67,13 | 148,00 |
16/5 | .3125 | 7,9375 | 200 | 12.50 pm | 5,67 | 61,03 | 134,55 | |
1 | 32/9 | .28125 | 7,14375 | 180 | 11.25 | 5.103 | 54,93 | 121,09 |
2 | 17/64 | .265625 | 6,746875 | 170 | 10.625 | 4.819 | 51,88 | 114,37 |
3 | 1/4 | .25 | 6,35 | 160 | 10 | 4.536 | 48,82 | 107,64 |
4 | 15/64 | .234375 | 5,953125 | 150 | 9.375 | 4.252 | 45,77 | 100,91 |
5 | 7/32 | .21875 | 5,55625 | 140 | 8,75 | 3.969 | 42,72 | 94,18 |
6 | 13/64 | .203125 | 5,159375 | 130 | 8.125 | 3.685 | 39,67 | 87,45 |
7 | 3/16 | .1875 | 4.7625 | 120 | 7.5 | 3.402 | 36,62 | 80,72 |
8 | 11/64 | .171875 | 4.365625 | 110 | 6.875 | 3.118 | 33,57 | 74,00 |
9 | 5/32 | .15625 | 3,96875 | 100 | 6,25 | 2.835 | 30,52 | 67,27 |
10 | 9/64 | .140625 | 3.571875 | 90 | 5.625 | 2.552 | 27,46 | 60,55 |
11 | 1/8 | .125 | 3.175 | 80 | 5 | 2.268 | 24.41 | 53,82 |
12 | 7/64 | .109375 | 2.778125 | 70 | 4.375 | 1.984 | 21.36 | 47,09 |
13 | 3/32 | .09375 | 2,38125 | 60 | 3,75 | 1.701 | 18.31 | 40,36 |
14 | 5/64 | .078125 | 1.984375 | 50 | 3.125 | 1.417 | 15.26 | 33,64 |
15 | 9/128 | .0703125 | 1.7859375 | 45 | 2,8125 | 1.276 | 13,73 | 30,27 |
16 | 1/16 | .0625 | 1.5875 | 40 | 2.5 | 1.134 | 12.21 | 26,91 |
17 | 9/160 | .05625 | 1,42875 | 36 | 2,25 | 1.021 | 10,99 | 24.22 |
18 | 1/20 | .05 | 1,27 | 32 | 2 | .9072 | 9.765 | 21.53 |
19 | 7/160 | .04375 | 1,11125 | 28 | 1,75 | .7938 | 8.544 | 18,84 |
20 | 3/80 | .0375 | .9525 | 24 | 1,50 | .6804 | 7.324 | 16.15 |
21 | 11/320 | .034375 | .873125 | 22 | 1.375 | .6237 | 6.713 | 14,80 |
22 | 1/32 | .03125 | .793750 | 20 | 1,25 | .567 | 6.103 | 13.46 |
23 | 9/320 | .028125 | .714375 | 18 | 1.125 | .5103 | 5.493 | 12.11 |
24 | 1/40 | .025 | .635 | 16 | 1 | .4536 | 4.882 | 10,76 |
25 | 7/320 | .021875 | .555625 | 14 | .875 | .3969 | 4.272 | 9,42 |
26 | 3/160 | .01875 | .47625 | 12 | .75 | .3402 | 3.662 | 8.07 |
27 | 11/640 | .0171875 | .4365625 | 11 | .6875 | .3119 | 3.357 | 7,40 |
28 | 1/64 | .015625 | .396875 | 10 | .625 | .2835 | 3.052 | 6,73 |
29 | 9/640 | .0140625 | .3571875 | 9 | .5625 | .2551 | 2.746 | 6.05 |
30 | 1/80 | .0125 | .3175 | 8 | .5 | .2268 | 2.441 | 5,38 |
31 | 7/640 | .0109375 | .2778125 | 7 | .4375 | .1984 | 2.136 | 4,71 |
32 | 13/1280 | .01015625 | .25796875 | 6½ | .40625 | .1843 | 1.983 | 4,37 |
33 | 3/320 | .009375 | .238125 | 6 | .375 | .1701 | 1.831 | 4.04 |
34 | 11/1280 | .00859375 | .21828125 | 5½ | .34375 | .1559 | 1.678 | 3,70 |
35 | 5/640 | .0078125 | .1984375 | 5 | .3125 | .1417 | 1.526 | 3,36 |
36 | 9/1280 | .00703125 | .17859375 | 4½ | .28125 | .1276 | 1.373 | 3.03 |
37 | 17/2560 | .006640625 | .168671875 | 4¼ | .265625 | .1205 | 1.297 | 2,87 |
38 | 1/160 | .00625 | .15875 | 4 | .25 | .1134 | 1.221 | 2,69 |
The same and nothing else shall be used to determine the duties and taxes imposed by the United States of America on sheet iron and steel. But this subchapter shall not be construed as increasing the duties on items authorized for importation.
