Sheet Metal Gauge Callouts in Drawings
Sheet Metal Gauge Callouts in Drawings
(OP)
Does anyone know if there is a standard for calling out sheet metal gauge thickness? Currently we are calling out the dimentional size followed by the gauge callout in parenthasis in the drawing notes Ex. Material: Aluminum .091 (11 Gage). Then in the main view we callout the thickness as a reference dimention.
Thanks
Thanks





RE: Sheet Metal Gauge Callouts in Drawings
In reality simply calling out the gauge alone is 100% acceptable and all that is needed.
RE: Sheet Metal Gauge Callouts in Drawings
RE: Sheet Metal Gauge Callouts in Drawings
Specify whose gage you are using. There are different gages for different metals. Also gage numbers are different in different countries. Adding the decimal dimension is always good practice, then there is no confusion as to what you want.
http://www.engineersedge.com/gauge.htm
B.E.
RE: Sheet Metal Gauge Callouts in Drawings
RE: Sheet Metal Gauge Callouts in Drawings
RE: Sheet Metal Gauge Callouts in Drawings
I recommend not calling out the sheet metal guage. Call out the thickness, and apply a tolerance. In most cases, you can design sheet metal parts such that the thickness tolerance is not critical.
Sheet metal fabricators know their sheet metal guages. They can read your numbers, and select the correct sheet from stock.
Your inspectors may or may not know sheet metal guages. It is irrelevant to them. They need to know whether to accept or reject the part they are inspecting.
Tell your shop you need .091±.015. Let them figure out how to do it. You can provide the gauge as a reference note.
RE: Sheet Metal Gauge Callouts in Drawings
RE: Sheet Metal Gauge Callouts in Drawings
RE: Sheet Metal Gauge Callouts in Drawings
Having discussed it at great length with several very experienced checkers, we typically dimension the actual/nominal thickness, usually followed by 'STOCK' rather than directly toleranced and will normally add the gauge in parenthesis in the material description.
What is Engineering anyway: FAQ1088-1484: In layman terms, what is "engineering"?