Sheet Metal Gauges: Steel

Steel Gauge#	Thickness
3	.239"
4	.224"
5	.209"
6	.194"
7	.179"
8	.164"
9	.150"
10	.135"
11	.120"
12	.105"
13	.090"
14	.075"
15	.067"
16	.060"
17	.054"
18	.048"
19	.042"
20	.036"
21	.033"
22	.030"
23	.027"
24	.024"
25	.021"
26	.018"
27	.016"
28	.015"
29	.014"
30	.0120"
31	.0105"
32	.0097"
33	.0090"
34	.0082"
35	.0075"
36	.0067"
37	.0064"
38	.0060"