Thank you all for your responses. This is all great information. The letters are merely identifiers and have no particular meaning. Critical to function in this case simply means that if these features are out of tolerance, the part will fail to assemble/function properly. We have a general...
Greeting! There is currently a rather heated discussion between the Design Team and the Quality Inspectors in my company about complex feature callouts that are critical to function. For this example, I am going to use a counterbore hole feature. We use the diamond symbol (♦) to denote critical...
