Thelen Tree Farm

Celebrating 17 Years - 2001 ~ 2018  



Sheet Metal Gages and Tolerances



This page contains information regarding Sheet Metal Gages and Tolerances for three common gages - 000 down to number 27 (0.419 to 0.0142 inches)

Gage
No.
American or Brown & Sharp
Non-Ferrous
U.S. Standard Revised
Sheet Steel
Birmingham or Stubs
Strip & Tubing
Gage Decimal

lbs./ft.²
1100,6061
Aluminum
Gage
Decimal
lbs./ft.²
Steel Strip
Gage Decimal
lbs./ft.²
Steel Strip
000
.4196
-
.375
15.300
.425
15.300
00
.3648
-
.3437
14.025
.380
14.025
0
.3249
-
.3125
12.750
.340
12.750
1
.2893
-
.2812
11.475
.300
11.475
2
.2576
-
.2656
10.837
.284
10.837
3
.2294
-
.2391
9.754
.259
10.200
4
.2043
-
.2242
9.146
.238
9.562
5
.1819
-
.2092
8.534
.220
8.925
6
.1620
2.286
.1943
7.926
.203
8.287
7
.1443
2.036
.1793
7.315
.180
7.343
8
.1285
1.813
.1644
6.707
.165
6.731
9
.1144
1.614
.1495
6.099
.148
6.038
10
.1019
1.438
.1345
5.487
.134
5.467
11
.0907
1.280
.1196
4.879
.120
4.895
12
.0808
1.140
.1046
4.267
.109
4.447
13
.0720
1.016
.0897
3.659
.095
3.876
14
.0641
.905
.0747
3.047
.083
3.386
15
.0571
.806
.0673
2.746
.072
2.937
16
.0508
.717
.0598
2.440
.065
2.652
17
.0453
.639
.0538
2.195
.058
2.366
18
.0403
.569
.0478
1.950
.049
1.999
19
.0359
.507
.0418
1.705
.042
1.713
20
.0320
.452
.0359
1.465
.035
1.428
21
.0285
.402
.0329
1.342
.032
1.305
22
.0253
.357
.0299
1.220
.028
1.142
23
.0226
.319
.0269
1.097
.025
1.020
24
.0201
.284
.0239
.975
.022
.898
25
.0179
.253
.0209
.853
.020
.816
26
.0159
.224
.0179
.730
.018
.734
27
.0142
.200
.0164
.669
 
 


Sheet Metal Thickness Tolerances During the rolling process that produces the sheet stock, a certain amount of "bowing" occurs in the rollers. This results in the sheet being slightly thinner at the edges than at the center of the sheet.


Aluminum Thickness Tolerances
Thickness
36" Sht
48" Sht
.018-.028
.002
.0025
.029-.036
.002
.0025
.037-.045
.0025
.003
.046-.068
.003
.004
.069-.076
.003
.004
.077-.096
.0035
.004
.097-.108
.004
.005
.109-.125
.0045
.005
.126-.140
.0045
.005
.141-.172
.006
.008
.173-.203
.007
.010
.204-.249
.009
.011
Stainless Thickness
Tolerances
Thickness 36" Sht 48" Sht
.017-.030 .0015 .002
.031-.041 .002 .003
.042-.059 .003 .004
.060-.073 .003 .0045
.074-.084 .004 .0055
.085-.099 .004 .006
.100-.115 .005 .007
.116-.131 .005 .0075
.132-.146 .006 .009
.147-.187 .007 .0105