I was fooling around this evening learning VLOOKUP and naming ranges when I discovered another useful thing. Validating entered data for cells in a new row can give you a drop-down list of valid entries.
I created a list of thread data similar to Wayne T.'s example. When the time comes to add a configuration, I copy the row as usual, the the VLOOKUP function gets the thread data for me. Using data validation with a list, I have a drop-down selection box with a list of valid thread descriptions to choose from. This is very handy for reducing typing and eliminating mistakes.