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In the tree view, click Piping > Piping Specification > Piping Materials Classes.
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In the Piping Materials Classes branch, open a specification and click the Piping Materials Class Rules > Nut Selection Filter.
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Click the Insert Row Command to insert a blank row in the grid view.
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Define the nut selection filter by providing appropriate values in the different columns.
The Nut Selection Filter sheet in the Piping Materials Class.xls workbook corresponds to the Nut Selection Filter node. See Piping Reference Data.